86161565 has 16 divisors (see below), whose sum is σ = 123303168. Its totient is φ = 56512896.

The previous prime is 86161549. The next prime is 86161577. The reversal of 86161565 is 56516168.

It is a cyclic number.

It is not a de Polignac number, because 86161565 - 2⁴ = 86161549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 52712 + ... + 54321.

It is an arithmetic number, because the mean of its divisors is an integer number (7706448).

Almost surely, 2^86161565 is an apocalyptic number.

It is an amenable number.

86161565 is a deficient number, since it is larger than the sum of its proper divisors (37141603).

86161565 is a wasteful number, since it uses less digits than its factorization.

86161565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107068.

The product of its digits is 43200, while the sum is 38.

The square root of 86161565 is about 9282.3254090772. The cubic root of 86161565 is about 441.6767375576.

It can be divided in two parts, 861 and 61565, that added together give a palindrome (62426).

The spelling of 86161565 in words is "eighty-six million, one hundred sixty-one thousand, five hundred sixty-five".