670940 has 12 divisors (see below), whose sum is σ = 1409016. Its totient is φ = 268368.

The previous prime is 670931. The next prime is 670951. The reversal of 670940 is 49076.

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, 16754 + ... + 16793.

It is an arithmetic number, because the mean of its divisors is an integer number (117418).

2⁶⁷⁰⁹⁴⁰ is an apocalyptic number.

It is an amenable number.

670940 is an abundant number, since it is smaller than the sum of its proper divisors (738076).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

670940 is a wasteful number, since it uses less digits than its factorization.

670940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33556 (or 33554 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 670940 is about 819.1092723196. The cubic root of 670940 is about 87.5443040942.

The spelling of 670940 in words is "six hundred seventy thousand, nine hundred forty".