86613391 has 2 divisors, whose sum is σ = 86613392. Its totient is φ = 86613390.

The previous prime is 86613389. The next prime is 86613403. The reversal of 86613391 is 19331668.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86613391 - 2¹ = 86613389 is a prime.

Together with 86613389, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 86613391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86613311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43306695 + 43306696.

It is an arithmetic number, because the mean of its divisors is an integer number (43306696).

Almost surely, 2^86613391 is an apocalyptic number.

86613391 is a deficient number, since it is larger than the sum of its proper divisors (1).

86613391 is an equidigital number, since it uses as much as digits as its factorization.

86613391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 37.

The square root of 86613391 is about 9306.6315603445. The cubic root of 86613391 is about 442.4474339336.

The spelling of 86613391 in words is "eighty-six million, six hundred thirteen thousand, three hundred ninety-one".