135222666 has 16 divisors (see below), whose sum is σ = 276200064. Its totient is φ = 44115104.

The previous prime is 135222653. The next prime is 135222667. The reversal of 135222666 is 666222531.

It is not an unprimeable number, because it can be changed into a prime (135222667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 239475 + ... + 240038.

It is an arithmetic number, because the mean of its divisors is an integer number (17262504).

Almost surely, 2^135222666 is an apocalyptic number.

135222666 is an abundant number, since it is smaller than the sum of its proper divisors (140977398).

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

135222666 is a wasteful number, since it uses less digits than its factorization.

135222666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479565.

The product of its digits is 25920, while the sum is 33.

The square root of 135222666 is about 11628.5281097824. The cubic root of 135222666 is about 513.2746687143.

The spelling of 135222666 in words is "one hundred thirty-five million, two hundred twenty-two thousand, six hundred sixty-six".