616125664 has 48 divisors (see below), whose sum is σ = 1512314496. Its totient is φ = 240048000.

The previous prime is 616125637. The next prime is 616125703. The reversal of 616125664 is 466521616.

It is a super-2 number, since 2×616125664² = 759221667678881792, which contains 22 as substring.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 122562 + ... + 127489.

It is an arithmetic number, because the mean of its divisors is an integer number (31506552).

Almost surely, 2^616125664 is an apocalyptic number.

It is an amenable number.

616125664 is an abundant number, since it is smaller than the sum of its proper divisors (896188832).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

616125664 is a wasteful number, since it uses less digits than its factorization.

616125664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250079 (or 250071 counting only the distinct ones).

The product of its digits is 51840, while the sum is 37.

The square root of 616125664 is about 24821.8787363084. The cubic root of 616125664 is about 850.9220278528.

It can be divided in two parts, 61612 and 5664, that added together give a palindrome (67276).

The spelling of 616125664 in words is "six hundred sixteen million, one hundred twenty-five thousand, six hundred sixty-four".