64931364 has 81 divisors (see below), whose sum is σ = 176589777. Its totient is φ = 20112768.

The previous prime is 64931357. The next prime is 64931371. The reversal of 64931364 is 46313946.

The square root of 64931364 is 8058.

It is a perfect power (a square), and thus also a powerful number.

64931364 is a `hidden beast` number, since 649 + 3 + 1 + 3 + 6 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (64931357) and next prime (64931371).

It can be written as a sum of positive squares in only one way, i.e., 50552100 + 14379264 = 7110^2 + 3792^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

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

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 821877 + ... + 821955.

Almost surely, 2^64931364 is an apocalyptic number.

64931364 is the 8058-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64931364

64931364 is an abundant number, since it is smaller than the sum of its proper divisors (111658413).

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

64931364 is a wasteful number, since it uses less digits than its factorization.

64931364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202 (or 101 counting only the distinct ones).

The product of its digits is 46656, while the sum is 36.

The cubic root of 64931364 is about 401.9310047180.

Multiplying 64931364 by its sum of digits (36), we get a square (2337529104 = 48348²).

64931364 divided by its sum of digits (36) gives a square (1803649 = 1343²).

Multiplying 64931364 by its product of digits (46656), we get a square (3029437718784 = 1740528²).

It can be divided in two parts, 6 and 4931364, that added together give a triangular number (4931370 = T₃₁₄₀).

The spelling of 64931364 in words is "sixty-four million, nine hundred thirty-one thousand, three hundred sixty-four".