611326489 has 2 divisors, whose sum is σ = 611326490. Its totient is φ = 611326488.

The previous prime is 611326487. The next prime is 611326517. The reversal of 611326489 is 984623116.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 585398025 + 25928464 = 24195^2 + 5092^2 .

It is a cyclic number.

It is not a de Polignac number, because 611326489 - 2¹ = 611326487 is a prime.

Together with 611326487, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (611326483) 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, 305663244 + 305663245.

It is an arithmetic number, because the mean of its divisors is an integer number (305663245).

Almost surely, 2^611326489 is an apocalyptic number.

It is an amenable number.

611326489 is a deficient number, since it is larger than the sum of its proper divisors (1).

611326489 is an equidigital number, since it uses as much as digits as its factorization.

611326489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 40.

The square root of 611326489 is about 24725.0174721880. The cubic root of 611326489 is about 848.7069099670.

The spelling of 611326489 in words is "six hundred eleven million, three hundred twenty-six thousand, four hundred eighty-nine".