86646971 has 8 divisors (see below), whose sum is σ = 87619488. Its totient is φ = 85680000.

The previous prime is 86646961. The next prime is 86647019. The reversal of 86646971 is 17964668.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 86646971 - 2⁶ = 86646907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86646961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35201 + ... + 37581.

It is an arithmetic number, because the mean of its divisors is an integer number (10952436).

Almost surely, 2^86646971 is an apocalyptic number.

86646971 is a deficient number, since it is larger than the sum of its proper divisors (972517).

86646971 is a wasteful number, since it uses less digits than its factorization.

86646971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2773.

The product of its digits is 435456, while the sum is 47.

The square root of 86646971 is about 9308.4354754169. The cubic root of 86646971 is about 442.5046054826.

The spelling of 86646971 in words is "eighty-six million, six hundred forty-six thousand, nine hundred seventy-one".