668562334 has 16 divisors (see below), whose sum is σ = 1096312320. Its totient is φ = 303252760.

The previous prime is 668562269. The next prime is 668562371. The reversal of 668562334 is 433265866.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 21184 + ... + 42259.

It is an arithmetic number, because the mean of its divisors is an integer number (68519520).

Almost surely, 2^668562334 is an apocalyptic number.

668562334 is a deficient number, since it is larger than the sum of its proper divisors (427749986).

668562334 is a wasteful number, since it uses less digits than its factorization.

668562334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63935.

The product of its digits is 622080, while the sum is 43.

The square root of 668562334 is about 25856.5723559794. The cubic root of 668562334 is about 874.4076901340.

The spelling of 668562334 in words is "six hundred sixty-eight million, five hundred sixty-two thousand, three hundred thirty-four".