671042408 has 32 divisors (see below), whose sum is σ = 1291557960. Its totient is φ = 326661120.

The previous prime is 671042389. The next prime is 671042417. The reversal of 671042408 is 804240176.

It can be written as a sum of positive squares in 4 ways, for example, as 96864964 + 574177444 = 9842^2 + 23962^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180860 + ... + 184532.

Almost surely, 2^671042408 is an apocalyptic number.

It is an amenable number.

671042408 is a deficient number, since it is larger than the sum of its proper divisors (620515552).

671042408 is a wasteful number, since it uses less digits than its factorization.

671042408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4277 (or 4273 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 671042408 is about 25904.4862523849. The cubic root of 671042408 is about 875.4875793560.

The spelling of 671042408 in words is "six hundred seventy-one million, forty-two thousand, four hundred eight".