673545668 has 12 divisors (see below), whose sum is σ = 1240742160. Its totient is φ = 319047912.

The previous prime is 673545667. The next prime is 673545739. The reversal of 673545668 is 866545376.

It is not an unprimeable number, because it can be changed into a prime (673545667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4431146 + ... + 4431297.

It is an arithmetic number, because the mean of its divisors is an integer number (103395180).

Almost surely, 2^673545668 is an apocalyptic number.

It is an amenable number.

673545668 is a deficient number, since it is larger than the sum of its proper divisors (567196492).

673545668 is a wasteful number, since it uses less digits than its factorization.

673545668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8862466 (or 8862464 counting only the distinct ones).

The product of its digits is 3628800, while the sum is 50.

The square root of 673545668 is about 25952.7583890422. The cubic root of 673545668 is about 876.5748695649.

The spelling of 673545668 in words is "six hundred seventy-three million, five hundred forty-five thousand, six hundred sixty-eight".