670549289 has 2 divisors, whose sum is σ = 670549290. Its totient is φ = 670549288.

The previous prime is 670549247. The next prime is 670549331. The reversal of 670549289 is 982945076.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (670549247) and next prime (670549331).

It can be written as a sum of positive squares in only one way, i.e., 516789289 + 153760000 = 22733^2 + 12400^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-670549289 is a prime.

It is not a weakly prime, because it can be changed into another prime (670540289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335274644 + 335274645.

It is an arithmetic number, because the mean of its divisors is an integer number (335274645).

Almost surely, 2^670549289 is an apocalyptic number.

It is an amenable number.

670549289 is a deficient number, since it is larger than the sum of its proper divisors (1).

670549289 is an equidigital number, since it uses as much as digits as its factorization.

670549289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1088640, while the sum is 50.

The square root of 670549289 is about 25894.9664799938. The cubic root of 670549289 is about 875.2730746053.

The spelling of 670549289 in words is "six hundred seventy million, five hundred forty-nine thousand, two hundred eighty-nine".