690754491289 has 2 divisors, whose sum is σ = 690754491290. Its totient is φ = 690754491288.

The previous prime is 690754491209. The next prime is 690754491293. The reversal of 690754491289 is 982194457096.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 487811449225 + 202943042064 = 698435^2 + 450492^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-690754491289 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 690754491289.

It is not a weakly prime, because it can be changed into another prime (690754491209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 345377245644 + 345377245645.

It is an arithmetic number, because the mean of its divisors is an integer number (345377245645).

Almost surely, 2^690754491289 is an apocalyptic number.

It is an amenable number.

690754491289 is a deficient number, since it is larger than the sum of its proper divisors (1).

690754491289 is an equidigital number, since it uses as much as digits as its factorization.

690754491289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 39191040, while the sum is 64.

The spelling of 690754491289 in words is "six hundred ninety billion, seven hundred fifty-four million, four hundred ninety-one thousand, two hundred eighty-nine".