166564608 has 72 divisors (see below), whose sum is σ = 506650368. Its totient is φ = 47588352.

The previous prime is 166564579. The next prime is 166564633. The reversal of 166564608 is 806465661.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 166564608.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10116 + ... + 20867.

Almost surely, 2^166564608 is an apocalyptic number.

It is an amenable number.

166564608 is an abundant number, since it is smaller than the sum of its proper divisors (340085760).

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

166564608 is an equidigital number, since it uses as much as digits as its factorization.

166564608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31009 (or 30995 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 42.

The square root of 166564608 is about 12905.9911668961. The cubic root of 166564608 is about 550.2088551153.

The spelling of 166564608 in words is "one hundred sixty-six million, five hundred sixty-four thousand, six hundred eight".