671779204 has 12 divisors (see below), whose sum is σ = 1175806800. Its totient is φ = 335834408.

The previous prime is 671779189. The next prime is 671779217. The reversal of 671779204 is 402977176.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26967 + ... + 45505.

It is an arithmetic number, because the mean of its divisors is an integer number (97983900).

Almost surely, 2^671779204 is an apocalyptic number.

It is an amenable number.

671779204 is a deficient number, since it is larger than the sum of its proper divisors (504027596).

671779204 is a wasteful number, since it uses less digits than its factorization.

671779204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27602 (or 27600 counting only the distinct ones).

The product of its (nonzero) digits is 148176, while the sum is 43.

The square root of 671779204 is about 25918.7037484516. The cubic root of 671779204 is about 875.8078868831.

The spelling of 671779204 in words is "six hundred seventy-one million, seven hundred seventy-nine thousand, two hundred four".