86995881 has 12 divisors (see below), whose sum is σ = 143612352. Its totient is φ = 49711896.

The previous prime is 86995877. The next prime is 86995903. The reversal of 86995881 is 18859968.

It is not a de Polignac number, because 86995881 - 2² = 86995877 is a prime.

It is a super-2 number, since 2×86995881² = 15136566621932322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (86995841) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 690381 + ... + 690506.

It is an arithmetic number, because the mean of its divisors is an integer number (11967696).

Almost surely, 2^86995881 is an apocalyptic number.

It is an amenable number.

86995881 is a deficient number, since it is larger than the sum of its proper divisors (56616471).

86995881 is a wasteful number, since it uses less digits than its factorization.

86995881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1380900 (or 1380897 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 54.

The square root of 86995881 is about 9327.1582488988. The cubic root of 86995881 is about 443.0977691528.

The spelling of 86995881 in words is "eighty-six million, nine hundred ninety-five thousand, eight hundred eighty-one".