86161563 has 20 divisors (see below), whose sum is σ = 129242520. Its totient is φ = 57203712.

The previous prime is 86161549. The next prime is 86161577. The reversal of 86161563 is 36516168.

It is a happy number.

86161563 is a `hidden beast` number, since 86 + 16 + 1 + 563 = 666.

It is an interprime number because it is at equal distance from previous prime (86161549) and next prime (86161577).

It is not a de Polignac number, because 86161563 - 2⁹ = 86161051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (86161583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 18748 + ... + 22886.

It is an arithmetic number, because the mean of its divisors is an integer number (6462126).

Almost surely, 2^86161563 is an apocalyptic number.

86161563 is a deficient number, since it is larger than the sum of its proper divisors (43080957).

86161563 is a wasteful number, since it uses less digits than its factorization.

86161563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4408 (or 4399 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 86161563 is about 9282.3253013456. The cubic root of 86161563 is about 441.6767341402.

The spelling of 86161563 in words is "eighty-six million, one hundred sixty-one thousand, five hundred sixty-three".