86615613 has 12 divisors (see below), whose sum is σ = 142984608. Its totient is φ = 49494600.

The previous prime is 86615603. The next prime is 86615671. The reversal of 86615613 is 31651668.

It is a happy number.

It is not a de Polignac number, because 86615613 - 2⁴ = 86615597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86615603) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 687363 + ... + 687488.

It is an arithmetic number, because the mean of its divisors is an integer number (11915384).

Almost surely, 2^86615613 is an apocalyptic number.

It is an amenable number.

86615613 is a deficient number, since it is larger than the sum of its proper divisors (56368995).

86615613 is a wasteful number, since it uses less digits than its factorization.

86615613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1374864 (or 1374861 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 86615613 is about 9306.7509368200. The cubic root of 86615613 is about 442.4512174509.

The spelling of 86615613 in words is "eighty-six million, six hundred fifteen thousand, six hundred thirteen".