86977215 has 48 divisors (see below), whose sum is σ = 163564128. Its totient is φ = 42501888.

The previous prime is 86977211. The next prime is 86977223. The reversal of 86977215 is 51277968.

It is not a de Polignac number, because 86977215 - 2² = 86977211 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86977211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 91372 + ... + 92318.

It is an arithmetic number, because the mean of its divisors is an integer number (3407586).

Almost surely, 2^86977215 is an apocalyptic number.

86977215 is a deficient number, since it is larger than the sum of its proper divisors (76586913).

86977215 is a wasteful number, since it uses less digits than its factorization.

86977215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1128 (or 1125 counting only the distinct ones).

The product of its digits is 211680, while the sum is 45.

The square root of 86977215 is about 9326.1575689026. The cubic root of 86977215 is about 443.0660762555.

The spelling of 86977215 in words is "eighty-six million, nine hundred seventy-seven thousand, two hundred fifteen".