86544691 has 2 divisors, whose sum is σ = 86544692. Its totient is φ = 86544690.

The previous prime is 86544683. The next prime is 86544697. The reversal of 86544691 is 19644568.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86544691 - 2³ = 86544683 is a prime.

It is not a weakly prime, because it can be changed into another prime (86544697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43272345 + 43272346.

It is an arithmetic number, because the mean of its divisors is an integer number (43272346).

Almost surely, 2^86544691 is an apocalyptic number.

86544691 is a deficient number, since it is larger than the sum of its proper divisors (1).

86544691 is an equidigital number, since it uses as much as digits as its factorization.

86544691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 207360, while the sum is 43.

The square root of 86544691 is about 9302.9399116623. The cubic root of 86544691 is about 442.3304228555.

The spelling of 86544691 in words is "eighty-six million, five hundred forty-four thousand, six hundred ninety-one".