86718965 has 4 divisors (see below), whose sum is σ = 104062764. Its totient is φ = 69375168.

The previous prime is 86718959. The next prime is 86718991. The reversal of 86718965 is 56981768.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 37466641 + 49252324 = 6121^2 + 7018^2 .

It is a cyclic number.

It is not a de Polignac number, because 86718965 - 2²² = 82524661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8671892 + ... + 8671901.

It is an arithmetic number, because the mean of its divisors is an integer number (26015691).

Almost surely, 2^86718965 is an apocalyptic number.

It is an amenable number.

86718965 is a deficient number, since it is larger than the sum of its proper divisors (17343799).

86718965 is a wasteful number, since it uses less digits than its factorization.

86718965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17343798.

The product of its digits is 725760, while the sum is 50.

The square root of 86718965 is about 9312.3018099716. The cubic root of 86718965 is about 442.6271289318.

The spelling of 86718965 in words is "eighty-six million, seven hundred eighteen thousand, nine hundred sixty-five".