612773309 has 2 divisors, whose sum is σ = 612773310. Its totient is φ = 612773308.

The previous prime is 612773303. The next prime is 612773323. The reversal of 612773309 is 903377216.

612773309 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 481670809 + 131102500 = 21947^2 + 11450^2 .

It is a cyclic number.

It is not a de Polignac number, because 612773309 - 2²⁰ = 611724733 is a prime.

It is a super-2 number, since 2×612773309² = 750982256445618962, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (612773303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306386654 + 306386655.

It is an arithmetic number, because the mean of its divisors is an integer number (306386655).

Almost surely, 2^612773309 is an apocalyptic number.

It is an amenable number.

612773309 is a deficient number, since it is larger than the sum of its proper divisors (1).

612773309 is an equidigital number, since it uses as much as digits as its factorization.

612773309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47628, while the sum is 38.

The square root of 612773309 is about 24754.2584013337. The cubic root of 612773309 is about 849.3759243800.

The spelling of 612773309 in words is "six hundred twelve million, seven hundred seventy-three thousand, three hundred nine".