86782317 has 4 divisors (see below), whose sum is σ = 115709760. Its totient is φ = 57854876.

The previous prime is 86782307. The next prime is 86782343. The reversal of 86782317 is 71328768.

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 a cyclic number.

It is not a de Polignac number, because 86782317 - 2⁴ = 86782301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86782307) 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, 14463717 + ... + 14463722.

It is an arithmetic number, because the mean of its divisors is an integer number (28927440).

Almost surely, 2^86782317 is an apocalyptic number.

It is an amenable number.

86782317 is a deficient number, since it is larger than the sum of its proper divisors (28927443).

86782317 is a wasteful number, since it uses less digits than its factorization.

86782317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28927442.

The product of its digits is 112896, while the sum is 42.

The square root of 86782317 is about 9315.7027110143. The cubic root of 86782317 is about 442.7348888594.

The spelling of 86782317 in words is "eighty-six million, seven hundred eighty-two thousand, three hundred seventeen".