625997684 has 24 divisors (see below), whose sum is σ = 1180798080. Its totient is φ = 288669024.

The previous prime is 625997639. The next prime is 625997689. The reversal of 625997684 is 486799526.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625997689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63137 + ... + 72375.

It is an arithmetic number, because the mean of its divisors is an integer number (49199920).

Almost surely, 2^625997684 is an apocalyptic number.

It is an amenable number.

625997684 is a deficient number, since it is larger than the sum of its proper divisors (554800396).

625997684 is a wasteful number, since it uses less digits than its factorization.

625997684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10559 (or 10557 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 56.

The square root of 625997684 is about 25019.9457233624. The cubic root of 625997684 is about 855.4426689860.

The spelling of 625997684 in words is "six hundred twenty-five million, nine hundred ninety-seven thousand, six hundred eighty-four".