86862813 has 16 divisors (see below), whose sum is σ = 124217280. Its totient is φ = 53823744.

The previous prime is 86862779. The next prime is 86862833. The reversal of 86862813 is 31826868.

It is not a de Polignac number, because 86862813 - 2⁸ = 86862557 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86862833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11356 + ... + 17397.

It is an arithmetic number, because the mean of its divisors is an integer number (7763580).

Almost surely, 2^86862813 is an apocalyptic number.

It is an amenable number.

86862813 is a deficient number, since it is larger than the sum of its proper divisors (37354467).

86862813 is a wasteful number, since it uses less digits than its factorization.

86862813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28828.

The product of its digits is 110592, while the sum is 42.

The square root of 86862813 is about 9320.0221566260. The cubic root of 86862813 is about 442.8717346116.

The spelling of 86862813 in words is "eighty-six million, eight hundred sixty-two thousand, eight hundred thirteen".