86511613 has 4 divisors (see below), whose sum is σ = 86712768. Its totient is φ = 86310460.

The previous prime is 86511577. The next prime is 86511619. The reversal of 86511613 is 31611568.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 86511613 - 2²⁵ = 52957181 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 (86511619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99931 + ... + 100792.

It is an arithmetic number, because the mean of its divisors is an integer number (21678192).

Almost surely, 2^86511613 is an apocalyptic number.

It is an amenable number.

86511613 is a deficient number, since it is larger than the sum of its proper divisors (201155).

86511613 is a wasteful number, since it uses less digits than its factorization.

86511613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201154.

The product of its digits is 4320, while the sum is 31.

The square root of 86511613 is about 9301.1619166640. The cubic root of 86511613 is about 442.2740617237.

The spelling of 86511613 in words is "eighty-six million, five hundred eleven thousand, six hundred thirteen".