86695871 has 16 divisors (see below), whose sum is σ = 92221440. Its totient is φ = 81375840.

The previous prime is 86695867. The next prime is 86695913. The reversal of 86695871 is 17859668.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 86695871 - 2² = 86695867 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86692871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 228560 + ... + 228938.

It is an arithmetic number, because the mean of its divisors is an integer number (5763840).

Almost surely, 2^86695871 is an apocalyptic number.

86695871 is a deficient number, since it is larger than the sum of its proper divisors (5525569).

86695871 is a wasteful number, since it uses less digits than its factorization.

86695871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614.

The product of its digits is 725760, while the sum is 50.

The square root of 86695871 is about 9311.0617547088. The cubic root of 86695871 is about 442.5878336502.

The spelling of 86695871 in words is "eighty-six million, six hundred ninety-five thousand, eight hundred seventy-one".