630479685 has 32 divisors (see below), whose sum is σ = 1101981312. Its totient is φ = 305268480.

The previous prime is 630479683. The next prime is 630479701. The reversal of 630479685 is 586974036.

It is not a de Polignac number, because 630479685 - 2¹ = 630479683 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630479683) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 142527 + ... + 146883.

It is an arithmetic number, because the mean of its divisors is an integer number (34436916).

Almost surely, 2^630479685 is an apocalyptic number.

It is an amenable number.

630479685 is a deficient number, since it is larger than the sum of its proper divisors (471501627).

630479685 is a wasteful number, since it uses less digits than its factorization.

630479685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5253.

The product of its (nonzero) digits is 1088640, while the sum is 48.

The square root of 630479685 is about 25109.3545317278. The cubic root of 630479685 is about 857.4794074619.

The spelling of 630479685 in words is "six hundred thirty million, four hundred seventy-nine thousand, six hundred eighty-five".