166794564 has 12 divisors (see below), whose sum is σ = 389187344. Its totient is φ = 55598184.

The previous prime is 166794553. The next prime is 166794569. The reversal of 166794564 is 465497661.

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

It is not an unprimeable number, because it can be changed into a prime (166794569) 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, 6949762 + ... + 6949785.

Almost surely, 2^166794564 is an apocalyptic number.

It is an amenable number.

166794564 is an abundant number, since it is smaller than the sum of its proper divisors (222392780).

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

166794564 is a wasteful number, since it uses less digits than its factorization.

166794564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13899554 (or 13899552 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 48.

The square root of 166794564 is about 12914.8969798446. The cubic root of 166794564 is about 550.4619413864.

The spelling of 166794564 in words is "one hundred sixty-six million, seven hundred ninety-four thousand, five hundred sixty-four".