73217564 has 36 divisors (see below), whose sum is σ = 156902760. Its totient is φ = 29725920.

The previous prime is 73217549. The next prime is 73217569. The reversal of 73217564 is 46571237.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73217569) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 6107 + ... + 13554.

It is an arithmetic number, because the mean of its divisors is an integer number (4358410).

Almost surely, 2^73217564 is an apocalyptic number.

It is an amenable number.

73217564 is an abundant number, since it is smaller than the sum of its proper divisors (83685196).

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

73217564 is a wasteful number, since it uses less digits than its factorization.

73217564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19698 (or 19689 counting only the distinct ones).

The product of its digits is 35280, while the sum is 35.

The square root of 73217564 is about 8556.7262431376. The cubic root of 73217564 is about 418.3487013432.

The spelling of 73217564 in words is "seventy-three million, two hundred seventeen thousand, five hundred sixty-four".