627649164 has 36 divisors (see below), whose sum is σ = 1588546960. Its totient is φ = 208954080.

The previous prime is 627649153. The next prime is 627649171. The reversal of 627649164 is 461946726.

627649164 is a `hidden beast` number, since 627 + 6 + 4 + 9 + 16 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

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 11 ways as a sum of consecutive naturals, for example, 19329 + ... + 40359.

Almost surely, 2^627649164 is an apocalyptic number.

It is an amenable number.

627649164 is an abundant number, since it is smaller than the sum of its proper divisors (960897796).

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

627649164 is a wasteful number, since it uses less digits than its factorization.

627649164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21870 (or 21865 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 627649164 is about 25052.9272541154. The cubic root of 627649164 is about 856.1942723672.

The spelling of 627649164 in words is "six hundred twenty-seven million, six hundred forty-nine thousand, one hundred sixty-four".