666666022 has 8 divisors (see below), whose sum is σ = 1090908072. Its totient is φ = 303030000.

The previous prime is 666666019. The next prime is 666666029. The reversal of 666666022 is 220666666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666666029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15151479 + ... + 15151522.

It is an arithmetic number, because the mean of its divisors is an integer number (136363509).

Almost surely, 2^666666022 is an apocalyptic number.

666666022 is a deficient number, since it is larger than the sum of its proper divisors (424242050).

666666022 is a wasteful number, since it uses less digits than its factorization.

666666022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30303014.

The product of its (nonzero) digits is 186624, while the sum is 40.

The square root of 666666022 is about 25819.8764907968. The cubic root of 666666022 is about 873.5801831521.

The spelling of 666666022 in words is "six hundred sixty-six million, six hundred sixty-six thousand, twenty-two".