809688896 has 14 divisors (see below), whose sum is σ = 1606726530. Its totient is φ = 404844416.

The previous prime is 809688823. The next prime is 809688911. The reversal of 809688896 is 698886908.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 802928896 + 6760000 = 28336^2 + 2600^2 .

It is a super-2 number, since 2×809688896² = 1311192216611397632, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6325631 + ... + 6325758.

Almost surely, 2^809688896 is an apocalyptic number.

It is an amenable number.

809688896 is a deficient number, since it is larger than the sum of its proper divisors (797037634).

809688896 is a wasteful number, since it uses less digits than its factorization.

809688896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12651401 (or 12651391 counting only the distinct ones).

The product of its (nonzero) digits is 11943936, while the sum is 62.

The square root of 809688896 is about 28455.0328764526. The cubic root of 809688896 is about 932.0503942247.

The spelling of 809688896 in words is "eight hundred nine million, six hundred eighty-eight thousand, eight hundred ninety-six".