670943 has 16 divisors (see below), whose sum is σ = 845376. Its totient is φ = 518400.

The previous prime is 670931. The next prime is 670951. The reversal of 670943 is 349076.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-670943 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6593 + ... + 6693.

It is an arithmetic number, because the mean of its divisors is an integer number (52836).

2⁶⁷⁰⁹⁴³ is an apocalyptic number.

670943 is a deficient number, since it is larger than the sum of its proper divisors (174433).

670943 is a wasteful number, since it uses less digits than its factorization.

670943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 670943 is about 819.1111035751. Note that the first 4 decimals coincide. The cubic root of 670943 is about 87.5444345741.

The spelling of 670943 in words is "six hundred seventy thousand, nine hundred forty-three".