624057664 has 14 divisors (see below), whose sum is σ = 1238364554. Its totient is φ = 312028800.

The previous prime is 624057653. The next prime is 624057677. The reversal of 624057664 is 466750426.

It can be written as a sum of positive squares in only one way, i.e., 575616064 + 48441600 = 23992^2 + 6960^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4875387 + ... + 4875514.

It is an arithmetic number, because the mean of its divisors is an integer number (88454611).

Almost surely, 2^624057664 is an apocalyptic number.

624057664 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

624057664 is a deficient number, since it is larger than the sum of its proper divisors (614306890).

624057664 is an equidigital number, since it uses as much as digits as its factorization.

624057664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9750913 (or 9750903 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 40.

The square root of 624057664 is about 24981.1461706624. The cubic root of 624057664 is about 854.5580580278.

The spelling of 624057664 in words is "six hundred twenty-four million, fifty-seven thousand, six hundred sixty-four".