634625672 has 16 divisors (see below), whose sum is σ = 1190236560. Its totient is φ = 317229264.

The previous prime is 634625671. The next prime is 634625681. The reversal of 634625672 is 276526436.

634625672 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×634625672² = 805499487122903168, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (634625671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31943 + ... + 47849.

It is an arithmetic number, because the mean of its divisors is an integer number (74389785).

Almost surely, 2^634625672 is an apocalyptic number.

It is an amenable number.

634625672 is a deficient number, since it is larger than the sum of its proper divisors (555610888).

634625672 is a wasteful number, since it uses less digits than its factorization.

634625672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20900 (or 20896 counting only the distinct ones).

The product of its digits is 362880, while the sum is 41.

The square root of 634625672 is about 25191.7778650098. Note that the first 3 decimals coincide. The cubic root of 634625672 is about 859.3548758386.

The spelling of 634625672 in words is "six hundred thirty-four million, six hundred twenty-five thousand, six hundred seventy-two".