612233309 has 2 divisors, whose sum is σ = 612233310. Its totient is φ = 612233308.

The previous prime is 612233299. The next prime is 612233311. The reversal of 612233309 is 903332216.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 475109209 + 137124100 = 21797^2 + 11710^2 .

It is a cyclic number.

It is not a de Polignac number, because 612233309 - 2¹² = 612229213 is a prime.

Together with 612233311, 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 (612233329) 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, 306116654 + 306116655.

It is an arithmetic number, because the mean of its divisors is an integer number (306116655).

Almost surely, 2^612233309 is an apocalyptic number.

It is an amenable number.

612233309 is a deficient number, since it is larger than the sum of its proper divisors (1).

612233309 is an equidigital number, since it uses as much as digits as its factorization.

612233309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 29.

The square root of 612233309 is about 24743.3487830568. The cubic root of 612233309 is about 849.1263498695.

The spelling of 612233309 in words is "six hundred twelve million, two hundred thirty-three thousand, three hundred nine".