73320564 has 48 divisors (see below), whose sum is σ = 177278976. Its totient is φ = 23570400.

The previous prime is 73320557. The next prime is 73320581. The reversal of 73320564 is 46502337.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39129 + ... + 40959.

It is an arithmetic number, because the mean of its divisors is an integer number (3693312).

Almost surely, 2^73320564 is an apocalyptic number.

It is an amenable number.

73320564 is an abundant number, since it is smaller than the sum of its proper divisors (103958412).

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

73320564 is a wasteful number, since it uses less digits than its factorization.

73320564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1956 (or 1954 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 30.

The square root of 73320564 is about 8562.7427848792. The cubic root of 73320564 is about 418.5447823737.

The spelling of 73320564 in words is "seventy-three million, three hundred twenty thousand, five hundred sixty-four".