624429664 has 24 divisors (see below), whose sum is σ = 1246665168. Its totient is φ = 307816320.

The previous prime is 624429539. The next prime is 624429671. The reversal of 624429664 is 466924426.

It is a self number, because there is not a number n which added to its sum of digits gives 624429664.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135147 + ... + 139690.

It is an arithmetic number, because the mean of its divisors is an integer number (51944382).

Almost surely, 2^624429664 is an apocalyptic number.

It is an amenable number.

624429664 is a deficient number, since it is larger than the sum of its proper divisors (622235504).

624429664 is a wasteful number, since it uses less digits than its factorization.

624429664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274918 (or 274910 counting only the distinct ones).

The product of its digits is 497664, while the sum is 43.

The square root of 624429664 is about 24988.5906765468. The cubic root of 624429664 is about 854.7278246327.

The spelling of 624429664 in words is "six hundred twenty-four million, four hundred twenty-nine thousand, six hundred sixty-four".