168893604 has 72 divisors (see below), whose sum is σ = 478365888. Its totient is φ = 49792320.

The previous prime is 168893579. The next prime is 168893671. The reversal of 168893604 is 406398861.

It is a self number, because there is not a number n which added to its sum of digits gives 168893604.

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, 8889 + ... + 20415.

Almost surely, 2^168893604 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 168893604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (239182944).

168893604 is an abundant number, since it is smaller than the sum of its proper divisors (309472284).

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

168893604 is a wasteful number, since it uses less digits than its factorization.

168893604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11585 (or 11580 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 168893604 is about 12995.9072018848. The cubic root of 168893604 is about 552.7614334364.

The spelling of 168893604 in words is "one hundred sixty-eight million, eight hundred ninety-three thousand, six hundred four".