86555613 has 4 divisors (see below), whose sum is σ = 115407488. Its totient is φ = 57703740.

The previous prime is 86555611. The next prime is 86555663. The reversal of 86555613 is 31655568.

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 not a de Polignac number, because 86555613 - 2¹ = 86555611 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 (86555611) 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, 14425933 + ... + 14425938.

It is an arithmetic number, because the mean of its divisors is an integer number (28851872).

Almost surely, 2^86555613 is an apocalyptic number.

It is an amenable number.

86555613 is a deficient number, since it is larger than the sum of its proper divisors (28851875).

86555613 is a wasteful number, since it uses less digits than its factorization.

86555613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28851874.

The product of its digits is 108000, while the sum is 39.

The square root of 86555613 is about 9303.5269118759. The cubic root of 86555613 is about 442.3490295415.

The spelling of 86555613 in words is "eighty-six million, five hundred fifty-five thousand, six hundred thirteen".