86915870 has 8 divisors (see below), whose sum is σ = 156448584. Its totient is φ = 34766344.

The previous prime is 86915869. The next prime is 86915893. The reversal of 86915870 is 7851968.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4345784 + ... + 4345803.

It is an arithmetic number, because the mean of its divisors is an integer number (19556073).

Almost surely, 2^86915870 is an apocalyptic number.

86915870 is a deficient number, since it is larger than the sum of its proper divisors (69532714).

86915870 is a wasteful number, since it uses less digits than its factorization.

86915870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8691594.

The product of its (nonzero) digits is 120960, while the sum is 44.

The square root of 86915870 is about 9322.8681209164. The cubic root of 86915870 is about 442.9618869728.

The spelling of 86915870 in words is "eighty-six million, nine hundred fifteen thousand, eight hundred seventy".