73149564 has 12 divisors (see below), whose sum is σ = 170682344. Its totient is φ = 24383184.

The previous prime is 73149551. The next prime is 73149569. The reversal of 73149564 is 46594137.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73149569) 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 3 ways as a sum of consecutive naturals, for example, 3047887 + ... + 3047910.

Almost surely, 2^73149564 is an apocalyptic number.

It is an amenable number.

73149564 is an abundant number, since it is smaller than the sum of its proper divisors (97532780).

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

73149564 is a wasteful number, since it uses less digits than its factorization.

73149564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6095804 (or 6095802 counting only the distinct ones).

The product of its digits is 90720, while the sum is 39.

The square root of 73149564 is about 8552.7518378590. The cubic root of 73149564 is about 418.2191489903.

The spelling of 73149564 in words is "seventy-three million, one hundred forty-nine thousand, five hundred sixty-four".