86815965 has 16 divisors (see below), whose sum is σ = 143387136. Its totient is φ = 44808000.

The previous prime is 86815951. The next prime is 86815969. The reversal of 86815965 is 56951868.

It is not a de Polignac number, because 86815965 - 2⁵ = 86815933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86815969) 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, 92886 + ... + 93815.

It is an arithmetic number, because the mean of its divisors is an integer number (8961696).

Almost surely, 2^86815965 is an apocalyptic number.

It is an amenable number.

86815965 is a deficient number, since it is larger than the sum of its proper divisors (56571171).

86815965 is a wasteful number, since it uses less digits than its factorization.

86815965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186740.

The product of its digits is 518400, while the sum is 48.

The square root of 86815965 is about 9317.5085189121. The cubic root of 86815965 is about 442.7921018152.

The spelling of 86815965 in words is "eighty-six million, eight hundred fifteen thousand, nine hundred sixty-five".