86682591 has 12 divisors (see below), whose sum is σ = 125471632. Its totient is φ = 57666816.

The previous prime is 86682587. The next prime is 86682619. The reversal of 86682591 is 19528668.

It is not a de Polignac number, because 86682591 - 2² = 86682587 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86682511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5506 + ... + 14271.

Almost surely, 2^86682591 is an apocalyptic number.

86682591 is a deficient number, since it is larger than the sum of its proper divisors (38789041).

86682591 is a wasteful number, since it uses less digits than its factorization.

86682591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20270 (or 20267 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 86682591 is about 9310.3485971257. The cubic root of 86682591 is about 442.5652340865.

The spelling of 86682591 in words is "eighty-six million, six hundred eighty-two thousand, five hundred ninety-one".