86918965 has 16 divisors (see below), whose sum is σ = 120079872. Its totient is φ = 59163264.

The previous prime is 86918929. The next prime is 86918969. The reversal of 86918965 is 56981968.

It is a cyclic number.

It is not a de Polignac number, because 86918965 - 2¹¹ = 86916917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86918969) 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, 4269 + ... + 13858.

It is an arithmetic number, because the mean of its divisors is an integer number (7504992).

Almost surely, 2^86918965 is an apocalyptic number.

It is an amenable number.

86918965 is a deficient number, since it is larger than the sum of its proper divisors (33160907).

86918965 is a wasteful number, since it uses less digits than its factorization.

86918965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18276.

The product of its digits is 933120, while the sum is 52.

The square root of 86918965 is about 9323.0341091299. The cubic root of 86918965 is about 442.9671447420.

The spelling of 86918965 in words is "eighty-six million, nine hundred eighteen thousand, nine hundred sixty-five".