813698317 has 4 divisors (see below), whose sum is σ = 825843136. Its totient is φ = 801553500.

The previous prime is 813698311. The next prime is 813698359. The reversal of 813698317 is 713896318.

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, and also an emirpimes, since its reverse is a distinct semiprime: 713896318 = 2 ⋅356948159.

It is a cyclic number.

It is not a de Polignac number, because 813698317 - 2²³ = 805309709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813698311) 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, 6072309 + ... + 6072442.

It is an arithmetic number, because the mean of its divisors is an integer number (206460784).

Almost surely, 2^813698317 is an apocalyptic number.

It is an amenable number.

813698317 is a deficient number, since it is larger than the sum of its proper divisors (12144819).

813698317 is a wasteful number, since it uses less digits than its factorization.

813698317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12144818.

The product of its digits is 217728, while the sum is 46.

The square root of 813698317 is about 28525.3977535809. The cubic root of 813698317 is about 933.5863055633.

The spelling of 813698317 in words is "eight hundred thirteen million, six hundred ninety-eight thousand, three hundred seventeen".