670337321 has 2 divisors, whose sum is σ = 670337322. Its totient is φ = 670337320.

The previous prime is 670337243. The next prime is 670337351. The reversal of 670337321 is 123733076.

670337321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 574081600 + 96255721 = 23960^2 + 9811^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-670337321 is a prime.

It is not a weakly prime, because it can be changed into another prime (670337351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335168660 + 335168661.

It is an arithmetic number, because the mean of its divisors is an integer number (335168661).

Almost surely, 2^670337321 is an apocalyptic number.

It is an amenable number.

670337321 is a deficient number, since it is larger than the sum of its proper divisors (1).

670337321 is an equidigital number, since it uses as much as digits as its factorization.

670337321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15876, while the sum is 32.

The square root of 670337321 is about 25890.8733147416. The cubic root of 670337321 is about 875.1808370726.

The spelling of 670337321 in words is "six hundred seventy million, three hundred thirty-seven thousand, three hundred twenty-one".