64365736 has 32 divisors (see below), whose sum is σ = 125695080. Its totient is φ = 30873600.

The previous prime is 64365733. The next prime is 64365781. The reversal of 64365736 is 63756346.

It can be written as a sum of positive squares in 4 ways, for example, as 34880836 + 29484900 = 5906^2 + 5430^2 .

It is not an unprimeable number, because it can be changed into a prime (64365731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18400 + ... + 21616.

Almost surely, 2^64365736 is an apocalyptic number.

It is an amenable number.

64365736 is a deficient number, since it is larger than the sum of its proper divisors (61329344).

64365736 is a wasteful number, since it uses less digits than its factorization.

64365736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3325 (or 3321 counting only the distinct ones).

The product of its digits is 272160, while the sum is 40.

The square root of 64365736 is about 8022.8259360402. The cubic root of 64365736 is about 400.7605031710.

The spelling of 64365736 in words is "sixty-four million, three hundred sixty-five thousand, seven hundred thirty-six".