630873664 has 28 divisors (see below), whose sum is σ = 1254849408. Its totient is φ = 314691200.

The previous prime is 630873631. The next prime is 630873671. The reversal of 630873664 is 466378036.

It is a self number, because there is not a number n which added to its sum of digits gives 630873664.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16149 + ... + 39019.

Almost surely, 2^630873664 is an apocalyptic number.

630873664 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

630873664 is a deficient number, since it is larger than the sum of its proper divisors (623975744).

630873664 is a wasteful number, since it uses less digits than its factorization.

630873664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23314 (or 23304 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 43.

The square root of 630873664 is about 25117.1985699042. The cubic root of 630873664 is about 857.6579797160.

The spelling of 630873664 in words is "six hundred thirty million, eight hundred seventy-three thousand, six hundred sixty-four".