626631972 has 48 divisors (see below), whose sum is σ = 1495058880. Its totient is φ = 204221952.

The previous prime is 626631919. The next prime is 626631983. The reversal of 626631972 is 279136626.

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 15 ways as a sum of consecutive naturals, for example, 107304 + ... + 112992.

It is an arithmetic number, because the mean of its divisors is an integer number (31147060).

Almost surely, 2^626631972 is an apocalyptic number.

It is an amenable number.

626631972 is an abundant number, since it is smaller than the sum of its proper divisors (868426908).

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

626631972 is a wasteful number, since it uses less digits than its factorization.

626631972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5900 (or 5898 counting only the distinct ones).

The product of its digits is 163296, while the sum is 42.

The square root of 626631972 is about 25032.6181611113. The cubic root of 626631972 is about 855.7314953271.

The spelling of 626631972 in words is "six hundred twenty-six million, six hundred thirty-one thousand, nine hundred seventy-two".