668174426 has 16 divisors (see below), whose sum is σ = 1107359424. Its totient is φ = 300763584.

The previous prime is 668174401. The next prime is 668174461. The reversal of 668174426 is 624471866.

668174426 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 426440 + ... + 428003.

It is an arithmetic number, because the mean of its divisors is an integer number (69209964).

Almost surely, 2^668174426 is an apocalyptic number.

668174426 is a deficient number, since it is larger than the sum of its proper divisors (439184998).

668174426 is a wasteful number, since it uses less digits than its factorization.

668174426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 854485.

The product of its digits is 387072, while the sum is 44.

The square root of 668174426 is about 25849.0701186716. The cubic root of 668174426 is about 874.2385434228.

The spelling of 668174426 in words is "six hundred sixty-eight million, one hundred seventy-four thousand, four hundred twenty-six".