73218764 has 18 divisors (see below), whose sum is σ = 130538940. Its totient is φ = 35924272.

The previous prime is 73218763. The next prime is 73218791. The reversal of 73218764 is 46781237.

It is not an unprimeable number, because it can be changed into a prime (73218763) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 131174 + ... + 131730.

Almost surely, 2^73218764 is an apocalyptic number.

It is an amenable number.

73218764 is a deficient number, since it is larger than the sum of its proper divisors (57320176).

73218764 is an equidigital number, since it uses as much as digits as its factorization.

73218764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1177 (or 618 counting only the distinct ones).

The product of its digits is 56448, while the sum is 38.

The square root of 73218764 is about 8556.7963631256. The cubic root of 73218764 is about 418.3509868408.

The spelling of 73218764 in words is "seventy-three million, two hundred eighteen thousand, seven hundred sixty-four".