674489665 has 8 divisors (see below), whose sum is σ = 809657640. Its totient is φ = 539411712.

The previous prime is 674489657. The next prime is 674489677. The reversal of 674489665 is 566984476.

It can be written as a sum of positive squares in 4 ways, for example, as 17438976 + 657050689 = 4176^2 + 25633^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 674489665 - 2³ = 674489657 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4744 + ... + 37033.

It is an arithmetic number, because the mean of its divisors is an integer number (101207205).

Almost surely, 2^674489665 is an apocalyptic number.

It is an amenable number.

674489665 is a deficient number, since it is larger than the sum of its proper divisors (135167975).

674489665 is a wasteful number, since it uses less digits than its factorization.

674489665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45011.

The product of its digits is 8709120, while the sum is 55.

The square root of 674489665 is about 25970.9388548046. The cubic root of 674489665 is about 876.9841948242.

The spelling of 674489665 in words is "six hundred seventy-four million, four hundred eighty-nine thousand, six hundred sixty-five".