86779320 has 32 divisors (see below), whose sum is σ = 260338320. Its totient is φ = 23141120.

The previous prime is 86779313. The next prime is 86779331. The reversal of 86779320 is 2397768.

It is a congruent number.

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, 361461 + ... + 361700.

Almost surely, 2^86779320 is an apocalyptic number.

It is an amenable number.

86779320 is an abundant number, since it is smaller than the sum of its proper divisors (173559000).

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

86779320 is a wasteful number, since it uses less digits than its factorization.

86779320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723175 (or 723171 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 42.

The square root of 86779320 is about 9315.5418521952. The cubic root of 86779320 is about 442.7297922307.

The spelling of 86779320 in words is "eighty-six million, seven hundred seventy-nine thousand, three hundred twenty".