813679697 has 4 divisors (see below), whose sum is σ = 823979520. Its totient is φ = 803379876.

The previous prime is 813679663. The next prime is 813679753. The reversal of 813679697 is 796976318.

813679697 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 813679697 - 2¹⁴ = 813663313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (813679637) 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, 5149793 + ... + 5149950.

It is an arithmetic number, because the mean of its divisors is an integer number (205994880).

Almost surely, 2^813679697 is an apocalyptic number.

It is an amenable number.

813679697 is a deficient number, since it is larger than the sum of its proper divisors (10299823).

813679697 is a wasteful number, since it uses less digits than its factorization.

813679697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10299822.

The product of its digits is 3429216, while the sum is 56.

The square root of 813679697 is about 28525.0713758967. The cubic root of 813679697 is about 933.5791843697.

The spelling of 813679697 in words is "eight hundred thirteen million, six hundred seventy-nine thousand, six hundred ninety-seven".