168158664 has 96 divisors (see below), whose sum is σ = 485503200. Its totient is φ = 52427520.

The previous prime is 168158657. The next prime is 168158687. The reversal of 168158664 is 466851861.

168158664 is a `hidden beast` number, since 1 + 6 + 8 + 1 + 586 + 64 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 112804 + ... + 114284.

It is an arithmetic number, because the mean of its divisors is an integer number (5057325).

Almost surely, 2^168158664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 168158664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (242751600).

168158664 is an abundant number, since it is smaller than the sum of its proper divisors (317344536).

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

168158664 is a wasteful number, since it uses less digits than its factorization.

168158664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1595 (or 1588 counting only the distinct ones).

The product of its digits is 276480, while the sum is 45.

The square root of 168158664 is about 12967.6005490607. The cubic root of 168158664 is about 551.9584877415.

The spelling of 168158664 in words is "one hundred sixty-eight million, one hundred fifty-eight thousand, six hundred sixty-four".