670973 has 8 divisors (see below), whose sum is σ = 735480. Its totient is φ = 609280.

The previous prime is 670963. The next prime is 670987. The reversal of 670973 is 379076.

It can be written as a sum of positive squares in 4 ways, for example, as 88804 + 582169 = 298^2 + 763^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-670973 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

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 7 ways as a sum of consecutive naturals, for example, 188 + ... + 1173.

It is an arithmetic number, because the mean of its divisors is an integer number (91935).

2⁶⁷⁰⁹⁷³ is an apocalyptic number.

It is an amenable number.

670973 is a deficient number, since it is larger than the sum of its proper divisors (64507).

670973 is a wasteful number, since it uses less digits than its factorization.

670973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1407.

The product of its (nonzero) digits is 7938, while the sum is 32.

The square root of 670973 is about 819.1294159045. The cubic root of 670973 is about 87.5457393516.

The spelling of 670973 in words is "six hundred seventy thousand, nine hundred seventy-three".