670768489 has 2 divisors, whose sum is σ = 670768490. Its totient is φ = 670768488.

The previous prime is 670768471. The next prime is 670768559. The reversal of 670768489 is 984867076.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 514518489 + 156250000 = 22683^2 + 12500^2 .

It is a cyclic number.

It is not a de Polignac number, because 670768489 - 2¹¹ = 670766441 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (670768409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335384244 + 335384245.

It is an arithmetic number, because the mean of its divisors is an integer number (335384245).

Almost surely, 2^670768489 is an apocalyptic number.

It is an amenable number.

670768489 is a deficient number, since it is larger than the sum of its proper divisors (1).

670768489 is an equidigital number, since it uses as much as digits as its factorization.

670768489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4064256, while the sum is 55.

The square root of 670768489 is about 25899.1986169457. The cubic root of 670768489 is about 875.3684386891.

The spelling of 670768489 in words is "six hundred seventy million, seven hundred sixty-eight thousand, four hundred eighty-nine".