73236564 has 36 divisors (see below), whose sum is σ = 194871040. Its totient is φ = 23127120.

The previous prime is 73236563. The next prime is 73236599. The reversal of 73236564 is 46563237.

73236564 is a `hidden beast` number, since 73 + 23 + 6 + 564 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73236563) 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, 52852 + ... + 54219.

Almost surely, 2^73236564 is an apocalyptic number.

It is an amenable number.

73236564 is an abundant number, since it is smaller than the sum of its proper divisors (121634476).

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

73236564 is a wasteful number, since it uses less digits than its factorization.

73236564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107100 (or 107095 counting only the distinct ones).

The product of its digits is 90720, while the sum is 36.

The square root of 73236564 is about 8557.8364088127. The cubic root of 73236564 is about 418.3848854563.

The spelling of 73236564 in words is "seventy-three million, two hundred thirty-six thousand, five hundred sixty-four".