86615969 has 16 divisors (see below), whose sum is σ = 100958400. Its totient is φ = 73436160.

The previous prime is 86615951. The next prime is 86615983. The reversal of 86615969 is 96951668.

It is a cyclic number.

It is not a de Polignac number, because 86615969 - 2⁸ = 86615713 is a prime.

It is a super-2 number, since 2×86615969² = 15004652171617922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86615909) 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 15 ways as a sum of consecutive naturals, for example, 19082 + ... + 23180.

It is an arithmetic number, because the mean of its divisors is an integer number (6309900).

Almost surely, 2^86615969 is an apocalyptic number.

It is an amenable number.

86615969 is a deficient number, since it is larger than the sum of its proper divisors (14342431).

86615969 is a wasteful number, since it uses less digits than its factorization.

86615969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4240.

The product of its digits is 699840, while the sum is 50.

The square root of 86615969 is about 9306.7700627017. The cubic root of 86615969 is about 442.4518236250.

The spelling of 86615969 in words is "eighty-six million, six hundred fifteen thousand, nine hundred sixty-nine".