668383252 has 6 divisors (see below), whose sum is σ = 1169670698. Its totient is φ = 334191624.

The previous prime is 668383231. The next prime is 668383267. The reversal of 668383252 is 252383866.

668383252 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 562828176 + 105555076 = 23724^2 + 10274^2 .

It is a junction number, because it is equal to n+sod(n) for n = 668383199 and 668383208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83547903 + ... + 83547910.

Almost surely, 2^668383252 is an apocalyptic number.

It is an amenable number.

668383252 is a deficient number, since it is larger than the sum of its proper divisors (501287446).

668383252 is a wasteful number, since it uses less digits than its factorization.

668383252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167095817 (or 167095815 counting only the distinct ones).

The product of its digits is 414720, while the sum is 43.

The square root of 668383252 is about 25853.1091360401. The cubic root of 668383252 is about 874.3296098246.

The spelling of 668383252 in words is "six hundred sixty-eight million, three hundred eighty-three thousand, two hundred fifty-two".