85813544 has 16 divisors (see below), whose sum is σ = 163105620. Its totient is φ = 42318720.

The previous prime is 85813537. The next prime is 85813571. The reversal of 85813544 is 44531858.

It can be written as a sum of positive squares in 2 ways, for example, as 85784644 + 28900 = 9262^2 + 170^2 .

It is a junction number, because it is equal to n+sod(n) for n = 85813498 and 85813507.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72887 + ... + 74054.

Almost surely, 2^85813544 is an apocalyptic number.

It is an amenable number.

85813544 is a deficient number, since it is larger than the sum of its proper divisors (77292076).

85813544 is a wasteful number, since it uses less digits than its factorization.

85813544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147020 (or 147016 counting only the distinct ones).

The product of its digits is 76800, while the sum is 38.

The square root of 85813544 is about 9263.5600068224. The cubic root of 85813544 is about 441.0812663141.

The spelling of 85813544 in words is "eighty-five million, eight hundred thirteen thousand, five hundred forty-four".