667845930 has 64 divisors (see below), whose sum is σ = 1702995840. Its totient is φ = 167295744.

The previous prime is 667845929. The next prime is 667845947. The reversal of 667845930 is 39548766.

667845930 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 667845930.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21817 + ... + 42563.

It is an arithmetic number, because the mean of its divisors is an integer number (26609310).

Almost surely, 2^667845930 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 667845930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (851497920).

667845930 is an abundant number, since it is smaller than the sum of its proper divisors (1035149910).

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

667845930 is a wasteful number, since it uses less digits than its factorization.

667845930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20823.

The product of its (nonzero) digits is 1088640, while the sum is 48.

The square root of 667845930 is about 25842.7152211218. The cubic root of 667845930 is about 874.0952520260.

The spelling of 667845930 in words is "six hundred sixty-seven million, eight hundred forty-five thousand, nine hundred thirty".