86607691 has 2 divisors, whose sum is σ = 86607692. Its totient is φ = 86607690.

The previous prime is 86607679. The next prime is 86607721. The reversal of 86607691 is 19670668.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86607691 - 2¹¹ = 86605643 is a prime.

It is not a weakly prime, because it can be changed into another prime (86607611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43303845 + 43303846.

It is an arithmetic number, because the mean of its divisors is an integer number (43303846).

Almost surely, 2^86607691 is an apocalyptic number.

86607691 is a deficient number, since it is larger than the sum of its proper divisors (1).

86607691 is an equidigital number, since it uses as much as digits as its factorization.

86607691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 86607691 is about 9306.3253220592. The cubic root of 86607691 is about 442.4377279453.

The spelling of 86607691 in words is "eighty-six million, six hundred seven thousand, six hundred ninety-one".