86320613 has 4 divisors (see below), whose sum is σ = 86568300. Its totient is φ = 86072928.

The previous prime is 86320607. The next prime is 86320639. The reversal of 86320613 is 31602368.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 55606849 + 30713764 = 7457^2 + 5542^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86320613 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 (86310613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123320 + ... + 124017.

It is an arithmetic number, because the mean of its divisors is an integer number (21642075).

Almost surely, 2^86320613 is an apocalyptic number.

It is an amenable number.

86320613 is a deficient number, since it is larger than the sum of its proper divisors (247687).

86320613 is a wasteful number, since it uses less digits than its factorization.

86320613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247686.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 86320613 is about 9290.8887088373. Note that the first 3 decimals coincide. The cubic root of 86320613 is about 441.9483382492.

The spelling of 86320613 in words is "eighty-six million, three hundred twenty thousand, six hundred thirteen".