673312668 has 24 divisors (see below), whose sum is σ = 1795500672. Its totient is φ = 192375024.

The previous prime is 673312639. The next prime is 673312669. The reversal of 673312668 is 866213376.

673312668 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673312669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4007730 + ... + 4007897.

It is an arithmetic number, because the mean of its divisors is an integer number (74812528).

Almost surely, 2^673312668 is an apocalyptic number.

It is an amenable number.

673312668 is an abundant number, since it is smaller than the sum of its proper divisors (1122188004).

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

673312668 is a wasteful number, since it uses less digits than its factorization.

673312668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8015641 (or 8015639 counting only the distinct ones).

The product of its digits is 217728, while the sum is 42.

The square root of 673312668 is about 25948.2690752196. The cubic root of 673312668 is about 876.4737799086.

The spelling of 673312668 in words is "six hundred seventy-three million, three hundred twelve thousand, six hundred sixty-eight".