809736016 has 10 divisors (see below), whose sum is σ = 1568863562. Its totient is φ = 404868000.

The previous prime is 809736007. The next prime is 809736023. The reversal of 809736016 is 610637908.

It can be written as a sum of positive squares in only one way, i.e., 665640000 + 144096016 = 25800^2 + 12004^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 809736016.

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, 25304235 + ... + 25304266.

Almost surely, 2^809736016 is an apocalyptic number.

It is an amenable number.

809736016 is a deficient number, since it is larger than the sum of its proper divisors (759127546).

809736016 is a wasteful number, since it uses less digits than its factorization.

809736016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50608509 (or 50608503 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 809736016 is about 28455.8608374444. The cubic root of 809736016 is about 932.0684741576.

The spelling of 809736016 in words is "eight hundred nine million, seven hundred thirty-six thousand, sixteen".