630161256 has 32 divisors (see below), whose sum is σ = 1576072800. Its totient is φ = 209964480.

The previous prime is 630161249. The next prime is 630161261. The reversal of 630161256 is 652161036.

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77010 + ... + 84798.

It is an arithmetic number, because the mean of its divisors is an integer number (49252275).

Almost surely, 2^630161256 is an apocalyptic number.

It is an amenable number.

630161256 is an abundant number, since it is smaller than the sum of its proper divisors (945911544).

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

630161256 is a wasteful number, since it uses less digits than its factorization.

630161256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11169 (or 11165 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 630161256 is about 25103.0128869026. The cubic root of 630161256 is about 857.3350241203.

The spelling of 630161256 in words is "six hundred thirty million, one hundred sixty-one thousand, two hundred fifty-six".