670267289 has 2 divisors, whose sum is σ = 670267290. Its totient is φ = 670267288.

The previous prime is 670267271. The next prime is 670267319. The reversal of 670267289 is 982762076.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 665227264 + 5040025 = 25792^2 + 2245^2 .

It is a cyclic number.

It is not a de Polignac number, because 670267289 - 2²⁴ = 653490073 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (670267229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335133644 + 335133645.

It is an arithmetic number, because the mean of its divisors is an integer number (335133645).

Almost surely, 2^670267289 is an apocalyptic number.

It is an amenable number.

670267289 is a deficient number, since it is larger than the sum of its proper divisors (1).

670267289 is an equidigital number, since it uses as much as digits as its factorization.

670267289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 508032, while the sum is 47.

The square root of 670267289 is about 25889.5208337273. The cubic root of 670267289 is about 875.1503584877.

The spelling of 670267289 in words is "six hundred seventy million, two hundred sixty-seven thousand, two hundred eighty-nine".