77922168 has 32 divisors (see below), whose sum is σ = 195806160. Its totient is φ = 25840640.

The previous prime is 77922167. The next prime is 77922179. The reversal of 77922168 is 86122977.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77922161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3513 + ... + 12968.

Almost surely, 2^77922168 is an apocalyptic number.

It is an amenable number.

77922168 is an abundant number, since it is smaller than the sum of its proper divisors (117883992).

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

77922168 is a wasteful number, since it uses less digits than its factorization.

77922168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16687 (or 16683 counting only the distinct ones).

The product of its digits is 84672, while the sum is 42.

The square root of 77922168 is about 8827.3533972533. The cubic root of 77922168 is about 427.1237056728.

The spelling of 77922168 in words is "seventy-seven million, nine hundred twenty-two thousand, one hundred sixty-eight".