637964 has 6 divisors (see below), whose sum is σ = 1116444. Its totient is φ = 318980.

The previous prime is 637939. The next prime is 638023. The reversal of 637964 is 469736.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79742 + ... + 79749.

It is an arithmetic number, because the mean of its divisors is an integer number (186074).

2⁶³⁷⁹⁶⁴ is an apocalyptic number.

It is an amenable number.

637964 is a deficient number, since it is larger than the sum of its proper divisors (478480).

637964 is a wasteful number, since it uses less digits than its factorization.

637964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159495 (or 159493 counting only the distinct ones).

The product of its digits is 27216, while the sum is 35.

The square root of 637964 is about 798.7264863519. The cubic root of 637964 is about 86.0859065865.

The spelling of 637964 in words is "six hundred thirty-seven thousand, nine hundred sixty-four".