666122258 has 8 divisors (see below), whose sum is σ = 1020442752. Its totient is φ = 325974676.

The previous prime is 666122221. The next prime is 666122263. The reversal of 666122258 is 852221666.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3543110 + ... + 3543297.

It is an arithmetic number, because the mean of its divisors is an integer number (127555344).

Almost surely, 2^666122258 is an apocalyptic number.

666122258 is a deficient number, since it is larger than the sum of its proper divisors (354320494).

666122258 is a wasteful number, since it uses less digits than its factorization.

666122258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7086456.

The product of its digits is 69120, while the sum is 38.

The square root of 666122258 is about 25809.3443930682. The cubic root of 666122258 is about 873.3426075908.

The spelling of 666122258 in words is "six hundred sixty-six million, one hundred twenty-two thousand, two hundred fifty-eight".