811576485 has 12 divisors (see below), whose sum is σ = 1406732652. Its totient is φ = 432840768.

The previous prime is 811576421. The next prime is 811576499. The reversal of 811576485 is 584675118.

It can be written as a sum of positive squares in 2 ways, for example, as 256832676 + 554743809 = 16026^2 + 23553^2 .

It is not a de Polignac number, because 811576485 - 2⁶ = 811576421 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 18035033 = 811576485 / (8 + 1 + 1 + 5 + 7 + 6 + 4 + 8 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 811576485.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9017472 + ... + 9017561.

It is an arithmetic number, because the mean of its divisors is an integer number (117227721).

Almost surely, 2^811576485 is an apocalyptic number.

It is an amenable number.

811576485 is a deficient number, since it is larger than the sum of its proper divisors (595156167).

811576485 is a wasteful number, since it uses less digits than its factorization.

811576485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18035044 (or 18035041 counting only the distinct ones).

The product of its digits is 268800, while the sum is 45.

The square root of 811576485 is about 28488.1814968945. The cubic root of 811576485 is about 932.7741136279.

The spelling of 811576485 in words is "eight hundred eleven million, five hundred seventy-six thousand, four hundred eighty-five".