86981315 has 4 divisors (see below), whose sum is σ = 104377584. Its totient is φ = 69585048.

The previous prime is 86981309. The next prime is 86981317. The reversal of 86981315 is 51318968.

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

It is a cyclic number.

It is not a de Polignac number, because 86981315 - 2¹⁴ = 86964931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86981317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8698127 + ... + 8698136.

It is an arithmetic number, because the mean of its divisors is an integer number (26094396).

Almost surely, 2^86981315 is an apocalyptic number.

86981315 is a deficient number, since it is larger than the sum of its proper divisors (17396269).

86981315 is a wasteful number, since it uses less digits than its factorization.

86981315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17396268.

The product of its digits is 51840, while the sum is 41.

The square root of 86981315 is about 9326.3773781678. The cubic root of 86981315 is about 443.0730380112.

The spelling of 86981315 in words is "eighty-six million, nine hundred eighty-one thousand, three hundred fifteen".