77900162 has 10 divisors (see below), whose sum is σ = 118348323. Its totient is φ = 38457042.

The previous prime is 77900161. The next prime is 77900167. The reversal of 77900162 is 26100977.

It can be written as a sum of positive squares in only one way, i.e., 38950081 + 38950081 = 6241^2 + 6241^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=6241.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77900161) by changing a digit.

It is a polite number, since it can be written in 4 ways as a sum of consecutive naturals, for example, 986039 + ... + 986117.

Almost surely, 2^77900162 is an apocalyptic number.

77900162 is a deficient number, since it is larger than the sum of its proper divisors (40448161).

77900162 is an frugal number, since it uses more digits than its factorization.

77900162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318 (or 81 counting only the distinct ones).

The product of its (nonzero) digits is 5292, while the sum is 32.

The square root of 77900162 is about 8826.1068427705. The cubic root of 77900162 is about 427.0834938843.

Multiplying 77900162 by its sum of digits (32), we get a square (2492805184 = 49928²).

The spelling of 77900162 in words is "seventy-seven million, nine hundred thousand, one hundred sixty-two".