815973696 has 224 divisors, whose sum is σ = 2615184000. Its totient is φ = 248500224.

The previous prime is 815973679. The next prime is 815973709. The reversal of 815973696 is 696379518.

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 31 ways as a sum of consecutive naturals, for example, 951700 + ... + 952556.

Almost surely, 2^815973696 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 815973696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1307592000).

815973696 is an abundant number, since it is smaller than the sum of its proper divisors (1799210304).

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

815973696 is a wasteful number, since it uses less digits than its factorization.

815973696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 926 (or 910 counting only the distinct ones).

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

The square root of 815973696 is about 28565.2532983693. The cubic root of 815973696 is about 934.4557046371.

The spelling of 815973696 in words is "eight hundred fifteen million, nine hundred seventy-three thousand, six hundred ninety-six".