813674817 has 6 divisors (see below), whose sum is σ = 1175308082. Its totient is φ = 542449872.

The previous prime is 813674809. The next prime is 813674831. The reversal of 813674817 is 718476318.

813674817 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 810882576 + 2792241 = 28476^2 + 1671^2 .

It is not a de Polignac number, because 813674817 - 2³ = 813674809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (813676817) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 45204148 + ... + 45204165.

Almost surely, 2^813674817 is an apocalyptic number.

It is an amenable number.

813674817 is a deficient number, since it is larger than the sum of its proper divisors (361633265).

813674817 is a wasteful number, since it uses less digits than its factorization.

813674817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90408319 (or 90408316 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 813674817 is about 28524.9858369816. The cubic root of 813674817 is about 933.5773180024.

The spelling of 813674817 in words is "eight hundred thirteen million, six hundred seventy-four thousand, eight hundred seventeen".