672712289 has 2 divisors, whose sum is σ = 672712290. Its totient is φ = 672712288.

The previous prime is 672712273. The next prime is 672712351. The reversal of 672712289 is 982217276.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 432307264 + 240405025 = 20792^2 + 15505^2 .

It is a cyclic number.

It is not a de Polignac number, because 672712289 - 2⁴ = 672712273 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (672712489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336356144 + 336356145.

It is an arithmetic number, because the mean of its divisors is an integer number (336356145).

Almost surely, 2^672712289 is an apocalyptic number.

It is an amenable number.

672712289 is a deficient number, since it is larger than the sum of its proper divisors (1).

672712289 is an equidigital number, since it uses as much as digits as its factorization.

672712289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 169344, while the sum is 44.

The square root of 672712289 is about 25936.6977273515. The cubic root of 672712289 is about 876.2131912502.

The spelling of 672712289 in words is "six hundred seventy-two million, seven hundred twelve thousand, two hundred eighty-nine".