670920808 has 16 divisors (see below), whose sum is σ = 1275210180. Its totient is φ = 330864768.

The previous prime is 670920797. The next prime is 670920841. The reversal of 670920808 is 808029076.

It can be written as a sum of positive squares in 2 ways, for example, as 669670884 + 1249924 = 25878^2 + 1118^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 573835 + ... + 575002.

Almost surely, 2^670920808 is an apocalyptic number.

It is an amenable number.

670920808 is a deficient number, since it is larger than the sum of its proper divisors (604289372).

670920808 is a wasteful number, since it uses less digits than its factorization.

670920808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1148916 (or 1148912 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 670920808 is about 25902.1390622473. The cubic root of 670920808 is about 875.4346936171.

The spelling of 670920808 in words is "six hundred seventy million, nine hundred twenty thousand, eight hundred eight".