813578713 has 4 divisors (see below), whose sum is σ = 813944320. Its totient is φ = 813213108.

The previous prime is 813578683. The next prime is 813578723. The reversal of 813578713 is 317875318.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 813578713 - 2¹³ = 813570521 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 813578713.

It is not an unprimeable number, because it can be changed into a prime (813578723) 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 3 ways as a sum of consecutive naturals, for example, 179445 + ... + 183922.

It is an arithmetic number, because the mean of its divisors is an integer number (203486080).

Almost surely, 2^813578713 is an apocalyptic number.

It is an amenable number.

813578713 is a deficient number, since it is larger than the sum of its proper divisors (365607).

813578713 is a wasteful number, since it uses less digits than its factorization.

813578713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365606.

The product of its digits is 141120, while the sum is 43.

The square root of 813578713 is about 28523.3012289952. The cubic root of 813578713 is about 933.5405612845.

The spelling of 813578713 in words is "eight hundred thirteen million, five hundred seventy-eight thousand, seven hundred thirteen".