64996136 has 8 divisors (see below), whose sum is σ = 121867770. Its totient is φ = 32498064.

The previous prime is 64996133. The next prime is 64996189. The reversal of 64996136 is 63169946.

It can be written as a sum of positive squares in only one way, i.e., 48916036 + 16080100 = 6994^2 + 4010^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (64996133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4062251 + ... + 4062266.

Almost surely, 2^64996136 is an apocalyptic number.

It is an amenable number.

64996136 is a deficient number, since it is larger than the sum of its proper divisors (56871634).

64996136 is a wasteful number, since it uses less digits than its factorization.

64996136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8124523 (or 8124519 counting only the distinct ones).

The product of its digits is 209952, while the sum is 44.

The square root of 64996136 is about 8062.0181096299. The cubic root of 64996136 is about 402.0646084783.

The spelling of 64996136 in words is "sixty-four million, nine hundred ninety-six thousand, one hundred thirty-six".