631164 has 24 divisors (see below), whose sum is σ = 1486800. Its totient is φ = 208384.

The previous prime is 631157. The next prime is 631171. The reversal of 631164 is 461136.

631164 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (631157) and next prime (631171).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 631164.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1612 + ... + 1964.

It is an arithmetic number, because the mean of its divisors is an integer number (61950).

2⁶³¹¹⁶⁴ is an apocalyptic number.

It is an amenable number.

631164 is an abundant number, since it is smaller than the sum of its proper divisors (855636).

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

631164 is a wasteful number, since it uses less digits than its factorization.

631164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509 (or 507 counting only the distinct ones).

The product of its digits is 432, while the sum is 21.

The square root of 631164 is about 794.4583060174. The cubic root of 631164 is about 85.7789527870.

The spelling of 631164 in words is "six hundred thirty-one thousand, one hundred sixty-four".