630685964 has 6 divisors (see below), whose sum is σ = 1103700444. Its totient is φ = 315342980.

The previous prime is 630685961. The next prime is 630685969. The reversal of 630685964 is 469586036.

It is not an unprimeable number, because it can be changed into a prime (630685961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78835742 + ... + 78835749.

It is an arithmetic number, because the mean of its divisors is an integer number (183950074).

Almost surely, 2^630685964 is an apocalyptic number.

It is an amenable number.

630685964 is a deficient number, since it is larger than the sum of its proper divisors (473014480).

630685964 is a wasteful number, since it uses less digits than its factorization.

630685964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157671495 (or 157671493 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 47.

The square root of 630685964 is about 25113.4618083609. The cubic root of 630685964 is about 857.5729133602.

The spelling of 630685964 in words is "six hundred thirty million, six hundred eighty-five thousand, nine hundred sixty-four".