674566559 has 2 divisors, whose sum is σ = 674566560. Its totient is φ = 674566558.

The previous prime is 674566537. The next prime is 674566597. The reversal of 674566559 is 955665476.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-674566559 is a prime.

It is a super-2 number, since 2×674566559² = 910080085042200962, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 674566559.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (674566159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 337283279 + 337283280.

It is an arithmetic number, because the mean of its divisors is an integer number (337283280).

Almost surely, 2^674566559 is an apocalyptic number.

674566559 is a deficient number, since it is larger than the sum of its proper divisors (1).

674566559 is an equidigital number, since it uses as much as digits as its factorization.

674566559 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6804000, while the sum is 53.

The square root of 674566559 is about 25972.4191980647. The cubic root of 674566559 is about 877.0175199013.

The spelling of 674566559 in words is "six hundred seventy-four million, five hundred sixty-six thousand, five hundred fifty-nine".