631264 has 12 divisors (see below), whose sum is σ = 1242864. Its totient is φ = 315616.

The previous prime is 631259. The next prime is 631271. The reversal of 631264 is 462136.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9832 + ... + 9895.

It is an arithmetic number, because the mean of its divisors is an integer number (103572).

2⁶³¹²⁶⁴ is an apocalyptic number.

It is an amenable number.

631264 is a deficient number, since it is larger than the sum of its proper divisors (611600).

631264 is a wasteful number, since it uses less digits than its factorization.

631264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19737 (or 19729 counting only the distinct ones).

The product of its digits is 864, while the sum is 22.

The square root of 631264 is about 794.5212394895. The cubic root of 631264 is about 85.7834827466.

The spelling of 631264 in words is "six hundred thirty-one thousand, two hundred sixty-four".