809736056 has 8 divisors (see below), whose sum is σ = 1518255120. Its totient is φ = 404868024.

The previous prime is 809736047. The next prime is 809736077. The reversal of 809736056 is 650637908.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 809735998 and 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, 50608496 + ... + 50608511.

It is an arithmetic number, because the mean of its divisors is an integer number (189781890).

Almost surely, 2^809736056 is an apocalyptic number.

It is an amenable number.

809736056 is a deficient number, since it is larger than the sum of its proper divisors (708519064).

809736056 is a wasteful number, since it uses less digits than its factorization.

809736056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101217013 (or 101217009 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 44.

The square root of 809736056 is about 28455.8615402873. The cubic root of 809736056 is about 932.0684895053.

The spelling of 809736056 in words is "eight hundred nine million, seven hundred thirty-six thousand, fifty-six".