813597696 has 220 divisors, whose sum is σ = 2576935548. Its totient is φ = 254803968.

The previous prime is 813597677. The next prime is 813597703. The reversal of 813597696 is 696795318.

It can be written as a sum of positive squares in 2 ways, for example, as 748569600 + 65028096 = 27360^2 + 8064^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1409760 + ... + 1410336.

Almost surely, 2^813597696 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 813597696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1288467774).

813597696 is an abundant number, since it is smaller than the sum of its proper divisors (1763337852).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

813597696 is a wasteful number, since it uses less digits than its factorization.

813597696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 626 (or 599 counting only the distinct ones).

The product of its digits is 2449440, while the sum is 54.

The square root of 813597696 is about 28523.6339900792. The cubic root of 813597696 is about 933.5478219066.

The spelling of 813597696 in words is "eight hundred thirteen million, five hundred ninety-seven thousand, six hundred ninety-six".