668662122 has 32 divisors (see below), whose sum is σ = 1417191552. Its totient is φ = 209598464.

The previous prime is 668662109. The next prime is 668662147. The reversal of 668662122 is 221266866.

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 15 ways as a sum of consecutive naturals, for example, 171163 + ... + 175025.

It is an arithmetic number, because the mean of its divisors is an integer number (44287236).

Almost surely, 2^668662122 is an apocalyptic number.

668662122 is an abundant number, since it is smaller than the sum of its proper divisors (748529430).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

668662122 is a wasteful number, since it uses less digits than its factorization.

668662122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5582.

The product of its digits is 82944, while the sum is 39.

The square root of 668662122 is about 25858.5019287661. The cubic root of 668662122 is about 874.4511919634.

The spelling of 668662122 in words is "six hundred sixty-eight million, six hundred sixty-two thousand, one hundred twenty-two".