36640764 has 18 divisors (see below), whose sum is σ = 92619800. Its totient is φ = 12213576.

The previous prime is 36640733. The next prime is 36640781. The reversal of 36640764 is 46704663.

36640764 is a `hidden beast` number, since 3 + 6 + 640 + 7 + 6 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1017799 = 36640764 / (3 + 6 + 6 + 4 + 0 + 7 + 6 + 4).

It is a congruent number.

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, 508864 + ... + 508935.

Almost surely, 2^36640764 is an apocalyptic number.

It is an amenable number.

36640764 is an abundant number, since it is smaller than the sum of its proper divisors (55979036).

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

36640764 is a wasteful number, since it uses less digits than its factorization.

36640764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1017809 (or 1017804 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 36.

The square root of 36640764 is about 6053.1614880160. The cubic root of 36640764 is about 332.1402489662.

The spelling of 36640764 in words is "thirty-six million, six hundred forty thousand, seven hundred sixty-four".