800209664 has 18 divisors (see below), whose sum is σ = 1597294020. Its totient is φ = 400104704.

The previous prime is 800209649. The next prime is 800209687. The reversal of 800209664 is 466902008.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1562654 + ... + 1563165.

Almost surely, 2^800209664 is an apocalyptic number.

It is an amenable number.

800209664 is a deficient number, since it is larger than the sum of its proper divisors (797084356).

800209664 is an equidigital number, since it uses as much as digits as its factorization.

800209664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3125835 (or 3125821 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 800209664 is about 28287.9773755566. The cubic root of 800209664 is about 928.3988574790.

The spelling of 800209664 in words is "eight hundred million, two hundred nine thousand, six hundred sixty-four".