627971964 has 24 divisors (see below), whose sum is σ = 1542387840. Its totient is φ = 198306864.

The previous prime is 627971951. The next prime is 627972001. The reversal of 627971964 is 469179726.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1376904 + ... + 1377359.

It is an arithmetic number, because the mean of its divisors is an integer number (64266160).

Almost surely, 2^627971964 is an apocalyptic number.

It is an amenable number.

627971964 is an abundant number, since it is smaller than the sum of its proper divisors (914415876).

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

627971964 is a wasteful number, since it uses less digits than its factorization.

627971964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2754289 (or 2754287 counting only the distinct ones).

The product of its digits is 1143072, while the sum is 51.

The square root of 627971964 is about 25059.3687869427. The cubic root of 627971964 is about 856.3410274654.

The spelling of 627971964 in words is "six hundred twenty-seven million, nine hundred seventy-one thousand, nine hundred sixty-four".