64566164 has 36 divisors (see below), whose sum is σ = 123901596. Its totient is φ = 29265408.

The previous prime is 64566163. The next prime is 64566179. The reversal of 64566164 is 46166546.

It can be written as a sum of positive squares in 6 ways, for example, as 5152900 + 59413264 = 2270^2 + 7708^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64566163) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 276992 + ... + 277224.

It is an arithmetic number, because the mean of its divisors is an integer number (3441711).

Almost surely, 2^64566164 is an apocalyptic number.

It is an amenable number.

64566164 is a deficient number, since it is larger than the sum of its proper divisors (59335432).

64566164 is a wasteful number, since it uses less digits than its factorization.

64566164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396 (or 321 counting only the distinct ones).

The product of its digits is 103680, while the sum is 38.

The square root of 64566164 is about 8035.3073369971. The cubic root of 64566164 is about 401.1760472269.

The spelling of 64566164 in words is "sixty-four million, five hundred sixty-six thousand, one hundred sixty-four".