86215756 has 24 divisors (see below), whose sum is σ = 167388480. Its totient is φ = 38523600.

The previous prime is 86215747. The next prime is 86215757. The reversal of 86215756 is 65751268.

It is not an unprimeable number, because it can be changed into a prime (86215757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14010 + ... + 19201.

It is an arithmetic number, because the mean of its divisors is an integer number (6974520).

Almost surely, 2^86215756 is an apocalyptic number.

It is an amenable number.

86215756 is a deficient number, since it is larger than the sum of its proper divisors (81172724).

86215756 is a wasteful number, since it uses less digits than its factorization.

86215756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33285 (or 33283 counting only the distinct ones).

The product of its digits is 100800, while the sum is 40.

The square root of 86215756 is about 9285.2439924861. The cubic root of 86215756 is about 441.7693151391.

The spelling of 86215756 in words is "eighty-six million, two hundred fifteen thousand, seven hundred fifty-six".