86651505 has 16 divisors (see below), whose sum is σ = 154047360. Its totient is φ = 46214064.

The previous prime is 86651473. The next prime is 86651549. The reversal of 86651505 is 50515668.

It is not a de Polignac number, because 86651505 - 2⁵ = 86651473 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 86651505.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 320797 + ... + 321066.

It is an arithmetic number, because the mean of its divisors is an integer number (9627960).

Almost surely, 2^86651505 is an apocalyptic number.

It is an amenable number.

86651505 is a deficient number, since it is larger than the sum of its proper divisors (67395855).

86651505 is a wasteful number, since it uses less digits than its factorization.

86651505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641877 (or 641871 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 36.

The square root of 86651505 is about 9308.6790147690. The cubic root of 86651505 is about 442.5123237016.

The spelling of 86651505 in words is "eighty-six million, six hundred fifty-one thousand, five hundred five".