86618913 has 8 divisors (see below), whose sum is σ = 116635776. Its totient is φ = 57174000.

The previous prime is 86618881. The next prime is 86618933. The reversal of 86618913 is 31981668.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 86618913 - 2⁵ = 86618881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (86618933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142633 + ... + 143238.

It is an arithmetic number, because the mean of its divisors is an integer number (14579472).

Almost surely, 2^86618913 is an apocalyptic number.

It is an amenable number.

86618913 is a deficient number, since it is larger than the sum of its proper divisors (30016863).

86618913 is a wasteful number, since it uses less digits than its factorization.

86618913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285975.

The product of its digits is 62208, while the sum is 42.

The square root of 86618913 is about 9306.9282257896. The cubic root of 86618913 is about 442.4568364166.

The spelling of 86618913 in words is "eighty-six million, six hundred eighteen thousand, nine hundred thirteen".