630756 has 36 divisors (see below), whose sum is σ = 1822912. Its totient is φ = 180144.

The previous prime is 630737. The next prime is 630797. The reversal of 630756 is 657036.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 630756.

It is an unprimeable number.

630756 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1000 + ... + 1503.

2⁶³⁰⁷⁵⁶ is an apocalyptic number.

It is an amenable number.

630756 is an abundant number, since it is smaller than the sum of its proper divisors (1192156).

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

630756 is a wasteful number, since it uses less digits than its factorization.

630756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2520 (or 2515 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 27.

The square root of 630756 is about 794.2014857705. The cubic root of 630756 is about 85.7604655916.

The spelling of 630756 in words is "six hundred thirty thousand, seven hundred fifty-six".