666022666 has 8 divisors (see below), whose sum is σ = 1004809284. Its totient is φ = 331086240.

The previous prime is 666022649. The next prime is 666022667. The reversal of 666022666 is 666220666.

666022666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 663835225 + 2187441 = 25765^2 + 1479^2 .

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

It is not an unprimeable number, because it can be changed into a prime (666022667) 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, 962115 + ... + 962806.

Almost surely, 2^666022666 is an apocalyptic number.

666022666 is a deficient number, since it is larger than the sum of its proper divisors (338786618).

666022666 is a wasteful number, since it uses less digits than its factorization.

666022666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1925096.

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

The square root of 666022666 is about 25807.4149422215. The cubic root of 666022666 is about 873.2990809103.

The spelling of 666022666 in words is "six hundred sixty-six million, twenty-two thousand, six hundred sixty-six".