6630156 has 72 divisors (see below), whose sum is σ = 18671744. Its totient is φ = 1969920.

The previous prime is 6630137. The next prime is 6630157. The reversal of 6630156 is 6510366.

It is not an unprimeable number, because it can be changed into a prime (6630157) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14280 + ... + 14736.

Almost surely, 2^6630156 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6630156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9335872).

6630156 is an abundant number, since it is smaller than the sum of its proper divisors (12041588).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6630156 is a wasteful number, since it uses less digits than its factorization.

6630156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511 (or 506 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 6630156 is about 2574.9089304284. The cubic root of 6630156 is about 187.8629981191.

It can be divided in two parts, 6630 and 156, that added together give a triangular number (6786 = T₁₁₆).

The spelling of 6630156 in words is "six million, six hundred thirty thousand, one hundred fifty-six".