86761881 has 16 divisors (see below), whose sum is σ = 132969600. Its totient is φ = 55846224.

The previous prime is 86761877. The next prime is 86761889. The reversal of 86761881 is 18816768.

It is not a de Polignac number, because 86761881 - 2² = 86761877 is a prime.

It is a super-2 number, since 2×86761881² = 15055247989316322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (86761889) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54621 + ... + 56186.

It is an arithmetic number, because the mean of its divisors is an integer number (8310600).

Almost surely, 2^86761881 is an apocalyptic number.

It is an amenable number.

86761881 is a deficient number, since it is larger than the sum of its proper divisors (46207719).

86761881 is a wasteful number, since it uses less digits than its factorization.

86761881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110845 (or 110839 counting only the distinct ones).

The product of its digits is 129024, while the sum is 45.

The square root of 86761881 is about 9314.6057887599. The cubic root of 86761881 is about 442.7001335437.

The spelling of 86761881 in words is "eighty-six million, seven hundred sixty-one thousand, eight hundred eighty-one".