671297908 has 12 divisors (see below), whose sum is σ = 1175091652. Its totient is φ = 335557440.

The previous prime is 671297881. The next prime is 671297927. The reversal of 671297908 is 809792176.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 381889764 + 289408144 = 19542^2 + 17012^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4785 + ... + 36952.

Almost surely, 2^671297908 is an apocalyptic number.

It is an amenable number.

671297908 is a deficient number, since it is larger than the sum of its proper divisors (503793744).

671297908 is a wasteful number, since it uses less digits than its factorization.

671297908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45762 (or 45760 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 49.

The square root of 671297908 is about 25909.4173612608. The cubic root of 671297908 is about 875.5986794843.

The spelling of 671297908 in words is "six hundred seventy-one million, two hundred ninety-seven thousand, nine hundred eight".