All those born on 6, 15, or 24 of any month come under numerology 6 and are dominated by number 6. Six completes a family as it is born of the feminine two and then multiplied by the male number three. It is strongly associated with the sense of creating strong roots from the family unit.

From Pythagorean: the number six represents all parts perfected and all things regenerated after a period of 216, which is the cube of the number six.

This number wants to fit in. It craves acceptance and is therefore a perfectionist in all things. It seeks to win others over through diplomacy and the application of common sense. It often takes the middle road without joining sides and at times can be a hypocrite. The voice of the people is the voice of god: that is connected directly to the perfectionist nature of the number six.
The characteristics of numerology 6 will be same as described in this page-

General Characteristics– The general characteristics of numerology six persons are of passionate nature,and are fond of new and costly dresses. They are clean; prefer harmony, and peace; trustworthy. They possess feminine qualities, and are sympathetic.

Strength– Humanitarian, loyal, love of home, generosity, co-operative, sense of responsibility, devotion to God, honesty, love of nature.

Weakness– Problems arise due to straightforwardness, too much duty consciousness and sacrifice, trouble to others.

Opportunity– Happy married life, construction of house, acquisition of property, substantial savings.

Threat– Wandering and drinking may ruin the person.

Health – Weak eyesight; usually suffer from depression, insomnia, and nervousness.

Finance– Money comes in many unexpected ways. Fortunate in financial matters. Get assistance from friends and relatives in difficulties, financial gain through marriage; make good investment in houses, land and property.

Compatible numbers for relation– Number 3, 6 and Number 9.

Attractive numbers– 3,9.

Repulsive numbers– 1,8.

Influenced by– Number 6 persons are influenced by Venus.

Development comes in the year– 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, 42, 45, 48, 51, 54, 57, 60, 63.

Lucky numbers– 2, 4, 5, 6, 7, 8, 9.

Unlucky numbers– 1, 3.

Lucky color– Blue.

Gem– Blue diamond.