668212295 has 4 divisors (see below), whose sum is σ = 801854760. Its totient is φ = 534569832.

The previous prime is 668212283. The next prime is 668212351. The reversal of 668212295 is 592212866.

668212295 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 668212295 - 2⁶ = 668212231 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66821225 + ... + 66821234.

It is an arithmetic number, because the mean of its divisors is an integer number (200463690).

Almost surely, 2^668212295 is an apocalyptic number.

668212295 is a deficient number, since it is larger than the sum of its proper divisors (133642465).

668212295 is a wasteful number, since it uses less digits than its factorization.

668212295 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133642464.

The product of its digits is 103680, while the sum is 41.

The square root of 668212295 is about 25849.8026104649. The cubic root of 668212295 is about 874.2550590274.

The spelling of 668212295 in words is "six hundred sixty-eight million, two hundred twelve thousand, two hundred ninety-five".