813696337 has 4 divisors (see below), whose sum is σ = 856522480. Its totient is φ = 770870196.

The previous prime is 813696329. The next prime is 813696343. The reversal of 813696337 is 733696318.

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: 733696318 = 2 ⋅366848159.

It is a cyclic number.

It is not a de Polignac number, because 813696337 - 2³ = 813696329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (813676337) 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, 21413043 + ... + 21413080.

It is an arithmetic number, because the mean of its divisors is an integer number (214130620).

Almost surely, 2^813696337 is an apocalyptic number.

It is an amenable number.

813696337 is a deficient number, since it is larger than the sum of its proper divisors (42826143).

813696337 is a wasteful number, since it uses less digits than its factorization.

813696337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42826142.

The product of its digits is 489888, while the sum is 46.

The square root of 813696337 is about 28525.3630476459. The cubic root of 813696337 is about 933.5855483201.

The spelling of 813696337 in words is "eight hundred thirteen million, six hundred ninety-six thousand, three hundred thirty-seven".