86591974 has 16 divisors (see below), whose sum is σ = 148674816. Its totient is φ = 37053000.

The previous prime is 86591971. The next prime is 86591977. The reversal of 86591974 is 47919568.

It is an interprime number because it is at equal distance from previous prime (86591971) and next prime (86591977).

It is a super-2 number, since 2×86591974² = 14996339922433352, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86591971) 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 in 7 ways as a sum of consecutive naturals, for example, 5199 + ... + 14149.

It is an arithmetic number, because the mean of its divisors is an integer number (9292176).

It is a vampire number, since it can be written as 8951 ⋅ 9674 (with its own digits).

Almost surely, 2^86591974 is an apocalyptic number.

86591974 is a deficient number, since it is larger than the sum of its proper divisors (62082842).

86591974 is a wasteful number, since it uses less digits than its factorization.

86591974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9651.

The product of its digits is 544320, while the sum is 49.

The square root of 86591974 is about 9305.4808580750. The cubic root of 86591974 is about 442.4109627532.

The spelling of 86591974 in words is "eighty-six million, five hundred ninety-one thousand, nine hundred seventy-four".