86975217 has 24 divisors (see below), whose sum is σ = 151136960. Its totient is φ = 47083680.

The previous prime is 86975191. The next prime is 86975233. The reversal of 86975217 is 71257968.

It is not a de Polignac number, because 86975217 - 2⁶ = 86975153 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86975237) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35134 + ... + 37527.

Almost surely, 2^86975217 is an apocalyptic number.

It is an amenable number.

86975217 is a deficient number, since it is larger than the sum of its proper divisors (64161743).

86975217 is a wasteful number, since it uses less digits than its factorization.

86975217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72693 (or 72690 counting only the distinct ones).

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

The square root of 86975217 is about 9326.0504502174. The cubic root of 86975217 is about 443.0626835938.

The spelling of 86975217 in words is "eighty-six million, nine hundred seventy-five thousand, two hundred seventeen".