86379561 has 32 divisors (see below), whose sum is σ = 133816320. Its totient is φ = 55015632.

The previous prime is 86379541. The next prime is 86379563. The reversal of 86379561 is 16597368.

It is a happy number.

86379561 is a `hidden beast` number, since 8 + 637 + 9 + 5 + 6 + 1 = 666.

It is not a de Polignac number, because 86379561 - 2¹¹ = 86377513 is a prime.

It is a super-2 number, since 2×86379561² = 14922857117105442, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86379563) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53776 + ... + 55358.

It is an arithmetic number, because the mean of its divisors is an integer number (4181760).

Almost surely, 2^86379561 is an apocalyptic number.

It is an amenable number.

86379561 is a deficient number, since it is larger than the sum of its proper divisors (47436759).

86379561 is a wasteful number, since it uses less digits than its factorization.

86379561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1682 (or 1676 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 86379561 is about 9294.0605227209. The cubic root of 86379561 is about 442.0489169396.

The spelling of 86379561 in words is "eighty-six million, three hundred seventy-nine thousand, five hundred sixty-one".