86986013 has 2 divisors, whose sum is σ = 86986014. Its totient is φ = 86986012.

The previous prime is 86985979. The next prime is 86986021. The reversal of 86986013 is 31068968.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74011609 + 12974404 = 8603^2 + 3602^2 .

It is a cyclic number.

It is not a de Polignac number, because 86986013 - 2²⁶ = 19877149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86986043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43493006 + 43493007.

It is an arithmetic number, because the mean of its divisors is an integer number (43493007).

Almost surely, 2^86986013 is an apocalyptic number.

It is an amenable number.

86986013 is a deficient number, since it is larger than the sum of its proper divisors (1).

86986013 is an equidigital number, since it uses as much as digits as its factorization.

86986013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 86986013 is about 9326.6292410495. The cubic root of 86986013 is about 443.0810148955.

The spelling of 86986013 in words is "eighty-six million, nine hundred eighty-six thousand, thirteen".