674318561 has 16 divisors (see below), whose sum is σ = 789723264. Its totient is φ = 563721984.

The previous prime is 674318537. The next prime is 674318591. The reversal of 674318561 is 165813476.

It is not a de Polignac number, because 674318561 - 2⁶ = 674318497 is a prime.

It is a super-2 number, since 2×674318561² = 909411043418221442, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (674318501) 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 in 15 ways as a sum of consecutive naturals, for example, 292931 + ... + 295223.

It is an arithmetic number, because the mean of its divisors is an integer number (49357704).

Almost surely, 2^674318561 is an apocalyptic number.

It is an amenable number.

674318561 is a deficient number, since it is larger than the sum of its proper divisors (115404703).

674318561 is a wasteful number, since it uses less digits than its factorization.

674318561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3320.

The product of its digits is 120960, while the sum is 41.

The square root of 674318561 is about 25967.6445023418. The cubic root of 674318561 is about 876.9100310023.

The spelling of 674318561 in words is "six hundred seventy-four million, three hundred eighteen thousand, five hundred sixty-one".