16580164 has 12 divisors (see below), whose sum is σ = 29951488. Its totient is φ = 8022600.

The previous prime is 16580159. The next prime is 16580167. The reversal of 16580164 is 46108561.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (16580167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66732 + ... + 66979.

Almost surely, 2^16580164 is an apocalyptic number.

It is an amenable number.

16580164 is a deficient number, since it is larger than the sum of its proper divisors (13371324).

16580164 is a wasteful number, since it uses less digits than its factorization.

16580164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133746 (or 133744 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 16580164 is about 4071.8747524942. The cubic root of 16580164 is about 254.9937919801.

The spelling of 16580164 in words is "sixteen million, five hundred eighty thousand, one hundred sixty-four".