86551870 has 16 divisors (see below), whose sum is σ = 156666960. Its totient is φ = 34426624.

The previous prime is 86551867. The next prime is 86551891. The reversal of 86551870 is 7815568.

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, 22387 + ... + 25966.

It is an arithmetic number, because the mean of its divisors is an integer number (9791685).

Almost surely, 2^86551870 is an apocalyptic number.

86551870 is a deficient number, since it is larger than the sum of its proper divisors (70115090).

86551870 is a wasteful number, since it uses less digits than its factorization.

86551870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48539.

The product of its (nonzero) digits is 67200, while the sum is 40.

The square root of 86551870 is about 9303.3257494296. The cubic root of 86551870 is about 442.3426531543.

The spelling of 86551870 in words is "eighty-six million, five hundred fifty-one thousand, eight hundred seventy".