627639944 has 16 divisors (see below), whose sum is σ = 1183329420. Its totient is φ = 312085440.

The previous prime is 627639937. The next prime is 627639973. The reversal of 627639944 is 449936726.

It can be written as a sum of positive squares in 2 ways, for example, as 573027844 + 54612100 = 23938^2 + 7390^2 .

It is a junction number, because it is equal to n+sod(n) for n = 627639892 and 627639901.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215279 + ... + 218174.

Almost surely, 2^627639944 is an apocalyptic number.

It is an amenable number.

627639944 is a deficient number, since it is larger than the sum of its proper divisors (555689476).

627639944 is a wasteful number, since it uses less digits than its factorization.

627639944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433640 (or 433636 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 50.

The square root of 627639944 is about 25052.7432430063. The cubic root of 627639944 is about 856.1900799243.

The spelling of 627639944 in words is "six hundred twenty-seven million, six hundred thirty-nine thousand, nine hundred forty-four".