86358591 has 48 divisors (see below), whose sum is σ = 147962880. Its totient is φ = 47952000.

The previous prime is 86358581. The next prime is 86358593. The reversal of 86358591 is 19585368.

86358591 is a `hidden beast` number, since 8 + 6 + 3 + 58 + 591 = 666.

It is not a de Polignac number, because 86358591 - 2¹⁵ = 86325823 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86358593) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 57571 + ... + 59051.

It is an arithmetic number, because the mean of its divisors is an integer number (3082560).

Almost surely, 2^86358591 is an apocalyptic number.

86358591 is a deficient number, since it is larger than the sum of its proper divisors (61604289).

86358591 is a wasteful number, since it uses less digits than its factorization.

86358591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1548 (or 1545 counting only the distinct ones).

The product of its digits is 259200, while the sum is 45.

The square root of 86358591 is about 9292.9323143989. The cubic root of 86358591 is about 442.0131425970.

The spelling of 86358591 in words is "eighty-six million, three hundred fifty-eight thousand, five hundred ninety-one".