85486813 has 4 divisors (see below), whose sum is σ = 86060700. Its totient is φ = 84912928.

The previous prime is 85486789. The next prime is 85486853. The reversal of 85486813 is 31868458.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31868458 = 2 ⋅15934229.

It can be written as a sum of positive squares in 2 ways, for example, as 37295449 + 48191364 = 6107^2 + 6942^2 .

It is a cyclic number.

It is not a de Polignac number, because 85486813 - 2²⁵ = 51932381 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 85486813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85486853) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 286720 + ... + 287017.

It is an arithmetic number, because the mean of its divisors is an integer number (21515175).

Almost surely, 2^85486813 is an apocalyptic number.

It is an amenable number.

85486813 is a deficient number, since it is larger than the sum of its proper divisors (573887).

85486813 is a wasteful number, since it uses less digits than its factorization.

85486813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 573886.

The product of its digits is 184320, while the sum is 43.

The square root of 85486813 is about 9245.9079056629. The cubic root of 85486813 is about 440.5207556691.

The spelling of 85486813 in words is "eighty-five million, four hundred eighty-six thousand, eight hundred thirteen".