611359009 has 2 divisors, whose sum is σ = 611359010. Its totient is φ = 611359008.

The previous prime is 611358997. The next prime is 611359031. The reversal of 611359009 is 900953116.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 441630225 + 169728784 = 21015^2 + 13028^2 .

It is a cyclic number.

It is not a de Polignac number, because 611359009 - 2¹⁵ = 611326241 is a prime.

It is not a weakly prime, because it can be changed into another prime (611359709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305679504 + 305679505.

It is an arithmetic number, because the mean of its divisors is an integer number (305679505).

Almost surely, 2^611359009 is an apocalyptic number.

It is an amenable number.

611359009 is a deficient number, since it is larger than the sum of its proper divisors (1).

611359009 is an equidigital number, since it uses as much as digits as its factorization.

611359009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7290, while the sum is 34.

The square root of 611359009 is about 24725.6750969513. The cubic root of 611359009 is about 848.7219589137.

The spelling of 611359009 in words is "six hundred eleven million, three hundred fifty-nine thousand, nine".