673646740 has 48 divisors (see below), whose sum is σ = 1572641280. Its totient is φ = 240704640.

The previous prime is 673646711. The next prime is 673646741. The reversal of 673646740 is 47646376.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673646741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33730 + ... + 49849.

It is an arithmetic number, because the mean of its divisors is an integer number (32763360).

Almost surely, 2^673646740 is an apocalyptic number.

It is an amenable number.

673646740 is an abundant number, since it is smaller than the sum of its proper divisors (898994540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

673646740 is a wasteful number, since it uses less digits than its factorization.

673646740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83632 (or 83630 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 43.

The square root of 673646740 is about 25954.7055463937. The cubic root of 673646740 is about 876.6187135328.

The spelling of 673646740 in words is "six hundred seventy-three million, six hundred forty-six thousand, seven hundred forty".