86964878 has 64 divisors (see below), whose sum is σ = 177085440. Its totient is φ = 31188960.

The previous prime is 86964869. The next prime is 86964883. The reversal of 86964878 is 87846968.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 242063 + ... + 242421.

It is an arithmetic number, because the mean of its divisors is an integer number (2766960).

Almost surely, 2^86964878 is an apocalyptic number.

86964878 is an abundant number, since it is smaller than the sum of its proper divisors (90120562).

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

86964878 is a wasteful number, since it uses less digits than its factorization.

86964878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414 (or 392 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 56.

The square root of 86964878 is about 9325.4961262123. The cubic root of 86964878 is about 443.0451268431.

The spelling of 86964878 in words is "eighty-six million, nine hundred sixty-four thousand, eight hundred seventy-eight".