674661688 has 16 divisors (see below), whose sum is σ = 1291906080. Its totient is φ = 330153408.

The previous prime is 674661661. The next prime is 674661697. The reversal of 674661688 is 886166476.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 896781 + ... + 897532.

It is an arithmetic number, because the mean of its divisors is an integer number (80744130).

Almost surely, 2^674661688 is an apocalyptic number.

It is an amenable number.

674661688 is a deficient number, since it is larger than the sum of its proper divisors (617244392).

674661688 is a wasteful number, since it uses less digits than its factorization.

674661688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1794366 (or 1794362 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 52.

The square root of 674661688 is about 25974.2504800427. The cubic root of 674661688 is about 877.0587443374.

The spelling of 674661688 in words is "six hundred seventy-four million, six hundred sixty-one thousand, six hundred eighty-eight".