668000740 has 24 divisors (see below), whose sum is σ = 1530329472. Its totient is φ = 242909280.

The previous prime is 668000719. The next prime is 668000747. The reversal of 668000740 is 47000866.

668000740 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (668000747) 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, 1517964 + ... + 1518403.

It is an arithmetic number, because the mean of its divisors is an integer number (63763728).

Almost surely, 2^668000740 is an apocalyptic number.

It is an amenable number.

668000740 is an abundant number, since it is smaller than the sum of its proper divisors (862328732).

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

668000740 is a wasteful number, since it uses less digits than its factorization.

668000740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3036387 (or 3036385 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 668000740 is about 25845.7102823660. The cubic root of 668000740 is about 874.1627866800.

The spelling of 668000740 in words is "six hundred sixty-eight million, seven hundred forty", and thus it is an aban number.