668826292 has 48 divisors (see below), whose sum is σ = 1262096640. Its totient is φ = 309374208.

The previous prime is 668826287. The next prime is 668826293. The reversal of 668826292 is 292628866.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668826293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 355009 + ... + 356887.

It is an arithmetic number, because the mean of its divisors is an integer number (26293680).

Almost surely, 2^668826292 is an apocalyptic number.

It is an amenable number.

668826292 is a deficient number, since it is larger than the sum of its proper divisors (593270348).

668826292 is a wasteful number, since it uses less digits than its factorization.

668826292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2032 (or 2030 counting only the distinct ones).

The product of its digits is 995328, while the sum is 49.

The square root of 668826292 is about 25861.6761251084. The cubic root of 668826292 is about 874.5227512259.

The spelling of 668826292 in words is "six hundred sixty-eight million, eight hundred twenty-six thousand, two hundred ninety-two".