809730648 has 64 divisors (see below), whose sum is σ = 2304136800. Its totient is φ = 263324160.

The previous prime is 809730643. The next prime is 809730659. The reversal of 809730648 is 846037908.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (809730643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36861 + ... + 54572.

Almost surely, 2^809730648 is an apocalyptic number.

It is an amenable number.

809730648 is an abundant number, since it is smaller than the sum of its proper divisors (1494406152).

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

809730648 is a wasteful number, since it uses less digits than its factorization.

809730648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91489 (or 91479 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 809730648 is about 28455.7665157697. The cubic root of 809730648 is about 932.0664144927.

The spelling of 809730648 in words is "eight hundred nine million, seven hundred thirty thousand, six hundred forty-eight".