611345239 has 2 divisors, whose sum is σ = 611345240. Its totient is φ = 611345238.

The previous prime is 611345173. The next prime is 611345243. The reversal of 611345239 is 932543116.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-611345239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (611345269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305672619 + 305672620.

It is an arithmetic number, because the mean of its divisors is an integer number (305672620).

Almost surely, 2^611345239 is an apocalyptic number.

611345239 is a deficient number, since it is larger than the sum of its proper divisors (1).

611345239 is an equidigital number, since it uses as much as digits as its factorization.

611345239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19440, while the sum is 34.

The square root of 611345239 is about 24725.3966398924. The cubic root of 611345239 is about 848.7155867773.

The spelling of 611345239 in words is "six hundred eleven million, three hundred forty-five thousand, two hundred thirty-nine".