86712171 has 64 divisors (see below), whose sum is σ = 149323776. Its totient is φ = 43545600.

The previous prime is 86712163. The next prime is 86712179. The reversal of 86712171 is 17121768.

It is an interprime number because it is at equal distance from previous prime (86712163) and next prime (86712179).

It is not a de Polignac number, because 86712171 - 2³ = 86712163 is a prime.

It is not an unprimeable number, because it can be changed into a prime (86712179) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 682710 + ... + 682836.

It is an arithmetic number, because the mean of its divisors is an integer number (2333184).

Almost surely, 2^86712171 is an apocalyptic number.

86712171 is a deficient number, since it is larger than the sum of its proper divisors (62611605).

86712171 is a wasteful number, since it uses less digits than its factorization.

86712171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252.

The product of its digits is 4704, while the sum is 33.

The square root of 86712171 is about 9311.9370165396. The cubic root of 86712171 is about 442.6155694179.

The spelling of 86712171 in words is "eighty-six million, seven hundred twelve thousand, one hundred seventy-one".