612254789 has 2 divisors, whose sum is σ = 612254790. Its totient is φ = 612254788.

The previous prime is 612254771. The next prime is 612254791. The reversal of 612254789 is 987452216.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 594530689 + 17724100 = 24383^2 + 4210^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-612254789 is a prime.

Together with 612254791, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (612254719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306127394 + 306127395.

It is an arithmetic number, because the mean of its divisors is an integer number (306127395).

Almost surely, 2^612254789 is an apocalyptic number.

It is an amenable number.

612254789 is a deficient number, since it is larger than the sum of its proper divisors (1).

612254789 is an equidigital number, since it uses as much as digits as its factorization.

612254789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 241920, while the sum is 44.

The square root of 612254789 is about 24743.7828352902. The cubic root of 612254789 is about 849.1362801910.

The spelling of 612254789 in words is "six hundred twelve million, two hundred fifty-four thousand, seven hundred eighty-nine".