64916136 has 24 divisors (see below), whose sum is σ = 175814730. Its totient is φ = 21638688.

The previous prime is 64916119. The next prime is 64916191. The reversal of 64916136 is 63161946.

64916136 is a `hidden beast` number, since 649 + 1 + 6 + 1 + 3 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 47527236 + 17388900 = 6894^2 + 4170^2 .

It is a tau number, because it is divible by the number of its divisors (24).

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 a self number, because there is not a number n which added to its sum of digits gives 64916136.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 450735 + ... + 450878.

Almost surely, 2^64916136 is an apocalyptic number.

It is an amenable number.

64916136 is an abundant number, since it is smaller than the sum of its proper divisors (110898594).

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

64916136 is a wasteful number, since it uses less digits than its factorization.

64916136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 901625 (or 901618 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 64916136 is about 8057.0550451142. The cubic root of 64916136 is about 401.8995813631.

The spelling of 64916136 in words is "sixty-four million, nine hundred sixteen thousand, one hundred thirty-six".