86420591 has 16 divisors (see below), whose sum is σ = 94660608. Its totient is φ = 78645600.

The previous prime is 86420527. The next prime is 86420599. The reversal of 86420591 is 19502468.

It is a cyclic number.

It is not a de Polignac number, because 86420591 - 2⁶ = 86420527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86420599) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42500 + ... + 44486.

It is an arithmetic number, because the mean of its divisors is an integer number (5916288).

Almost surely, 2^86420591 is an apocalyptic number.

86420591 is a deficient number, since it is larger than the sum of its proper divisors (8240017).

86420591 is a wasteful number, since it uses less digits than its factorization.

86420591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2102.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 86420591 is about 9296.2675843588. The cubic root of 86420591 is about 442.1188964420.

The spelling of 86420591 in words is "eighty-six million, four hundred twenty thousand, five hundred ninety-one".