86647813 has 8 divisors (see below), whose sum is σ = 100704960. Its totient is φ = 73010400.

The previous prime is 86647811. The next prime is 86647843. The reversal of 86647813 is 31874668.

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

It is a cyclic number.

It is not a de Polignac number, because 86647813 - 2¹ = 86647811 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 86647813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86647811) 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, 104488 + ... + 105313.

It is an arithmetic number, because the mean of its divisors is an integer number (12588120).

Almost surely, 2^86647813 is an apocalyptic number.

It is an amenable number.

86647813 is a deficient number, since it is larger than the sum of its proper divisors (14057147).

86647813 is a wasteful number, since it uses less digits than its factorization.

86647813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209867.

The product of its digits is 193536, while the sum is 43.

The square root of 86647813 is about 9308.4807031008. The cubic root of 86647813 is about 442.5060388379.

The spelling of 86647813 in words is "eighty-six million, six hundred forty-seven thousand, eight hundred thirteen".