64787164 has 36 divisors (see below), whose sum is σ = 123590880. Its totient is φ = 29702400.

The previous prime is 64787161. The next prime is 64787171. The reversal of 64787164 is 46178746.

It is a self number, because there is not a number n which added to its sum of digits gives 64787164.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64787161) 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, 161364 + ... + 161764.

It is an arithmetic number, because the mean of its divisors is an integer number (3433080).

Almost surely, 2^64787164 is an apocalyptic number.

It is an amenable number.

64787164 is a deficient number, since it is larger than the sum of its proper divisors (58803716).

64787164 is a wasteful number, since it uses less digits than its factorization.

64787164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670 (or 655 counting only the distinct ones).

The product of its digits is 225792, while the sum is 43.

The square root of 64787164 is about 8049.0473970526. The cubic root of 64787164 is about 401.6332471827.

The spelling of 64787164 in words is "sixty-four million, seven hundred eighty-seven thousand, one hundred sixty-four".