86136691 has 2 divisors, whose sum is σ = 86136692. Its totient is φ = 86136690.

The previous prime is 86136689. The next prime is 86136707. The reversal of 86136691 is 19663168.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86136691 - 2¹ = 86136689 is a prime.

Together with 86136689, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (86146691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43068345 + 43068346.

It is an arithmetic number, because the mean of its divisors is an integer number (43068346).

Almost surely, 2^86136691 is an apocalyptic number.

86136691 is a deficient number, since it is larger than the sum of its proper divisors (1).

86136691 is an equidigital number, since it uses as much as digits as its factorization.

86136691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46656, while the sum is 40.

The square root of 86136691 is about 9280.9854541422. The cubic root of 86136691 is about 441.6342308841.

The spelling of 86136691 in words is "eighty-six million, one hundred thirty-six thousand, six hundred ninety-one".