674565866 has 24 divisors (see below), whose sum is σ = 1122417324. Its totient is φ = 303738240.

The previous prime is 674565847. The next prime is 674565869. The reversal of 674565866 is 668565476.

It can be written as a sum of positive squares in 6 ways, for example, as 12996025 + 661569841 = 3605^2 + 25721^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (674565869) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10481 + ... + 38196.

Almost surely, 2^674565866 is an apocalyptic number.

674565866 is a deficient number, since it is larger than the sum of its proper divisors (447851458).

674565866 is a wasteful number, since it uses less digits than its factorization.

674565866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48746 (or 48733 counting only the distinct ones).

The product of its digits is 7257600, while the sum is 53.

The square root of 674565866 is about 25972.4058569860. The cubic root of 674565866 is about 877.0172195734.

The spelling of 674565866 in words is "six hundred seventy-four million, five hundred sixty-five thousand, eight hundred sixty-six".