809668608 has 104 divisors (see below), whose sum is σ = 2467522368. Its totient is φ = 231309312.

The previous prime is 809668579. The next prime is 809668619. The reversal of 809668608 is 806866908.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81310 + ... + 90722.

Almost surely, 2^809668608 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 809668608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1233761184).

809668608 is an abundant number, since it is smaller than the sum of its proper divisors (1657853760).

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

809668608 is an equidigital number, since it uses as much as digits as its factorization.

809668608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9447 (or 9425 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 51.

The square root of 809668608 is about 28454.6763819236. The cubic root of 809668608 is about 932.0426095079.

The spelling of 809668608 in words is "eight hundred nine million, six hundred sixty-eight thousand, six hundred eight".