612266989 has 2 divisors, whose sum is σ = 612266990. Its totient is φ = 612266988.

The previous prime is 612266983. The next prime is 612266999. The reversal of 612266989 is 989662216.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 326994889 + 285272100 = 18083^2 + 16890^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-612266989 is a prime.

It is a super-2 number, since 2×612266989² = 749741731638252242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (612266983) 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, 306133494 + 306133495.

It is an arithmetic number, because the mean of its divisors is an integer number (306133495).

Almost surely, 2^612266989 is an apocalyptic number.

It is an amenable number.

612266989 is a deficient number, since it is larger than the sum of its proper divisors (1).

612266989 is an equidigital number, since it uses as much as digits as its factorization.

612266989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 559872, while the sum is 49.

The square root of 612266989 is about 24744.0293606357. The cubic root of 612266989 is about 849.1419202143.

The spelling of 612266989 in words is "six hundred twelve million, two hundred sixty-six thousand, nine hundred eighty-nine".