674664757 has 4 divisors (see below), whose sum is σ = 726562060. Its totient is φ = 622767456.

The previous prime is 674664733. The next prime is 674664763. The reversal of 674664757 is 757466476.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 69455556 + 605209201 = 8334^2 + 24601^2 .

It is a cyclic number.

It is not a de Polignac number, because 674664757 - 2⁷ = 674664629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (674664707) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 25948632 + ... + 25948657.

It is an arithmetic number, because the mean of its divisors is an integer number (181640515).

Almost surely, 2^674664757 is an apocalyptic number.

It is an amenable number.

674664757 is a deficient number, since it is larger than the sum of its proper divisors (51897303).

674664757 is a wasteful number, since it uses less digits than its factorization.

674664757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51897302.

The product of its digits is 5927040, while the sum is 52.

The square root of 674664757 is about 25974.3095577149. The cubic root of 674664757 is about 877.0600742332.

The spelling of 674664757 in words is "six hundred seventy-four million, six hundred sixty-four thousand, seven hundred fifty-seven".