670880990 has 24 divisors (see below), whose sum is σ = 1307625768. Its totient is φ = 247709280.

The previous prime is 670880963. The next prime is 670881007. The reversal of 670880990 is 99088076.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 196796 + ... + 200175.

It is an arithmetic number, because the mean of its divisors is an integer number (54484407).

Almost surely, 2^670880990 is an apocalyptic number.

670880990 is a deficient number, since it is larger than the sum of its proper divisors (636744778).

670880990 is a wasteful number, since it uses less digits than its factorization.

670880990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397004 (or 396991 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 47.

The square root of 670880990 is about 25901.3704270643. The cubic root of 670880990 is about 875.4173747583.

The spelling of 670880990 in words is "six hundred seventy million, eight hundred eighty thousand, nine hundred ninety".