668001372 has 24 divisors (see below), whose sum is σ = 1563171456. Its totient is φ = 222024048.

The previous prime is 668001359. The next prime is 668001401. The reversal of 668001372 is 273100866.

668001372 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76048 + ... + 84375.

It is an arithmetic number, because the mean of its divisors is an integer number (65132144).

Almost surely, 2^668001372 is an apocalyptic number.

It is an amenable number.

668001372 is an abundant number, since it is smaller than the sum of its proper divisors (895170084).

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

668001372 is a wasteful number, since it uses less digits than its factorization.

668001372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160777 (or 160775 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 668001372 is about 25845.7225087634. The cubic root of 668001372 is about 874.1630623637.

The spelling of 668001372 in words is "six hundred sixty-eight million, one thousand, three hundred seventy-two".