266106642 has 32 divisors (see below), whose sum is σ = 556391808. Its totient is φ = 84686976.

The previous prime is 266106629. The next prime is 266106649. The reversal of 266106642 is 246601662.

266106642 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (266106649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88638 + ... + 91590.

It is an arithmetic number, because the mean of its divisors is an integer number (17387244).

Almost surely, 2^266106642 is an apocalyptic number.

266106642 is an abundant number, since it is smaller than the sum of its proper divisors (290285166).

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

266106642 is a wasteful number, since it uses less digits than its factorization.

266106642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3634.

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 266106642 is about 16312.7754229622. The cubic root of 266106642 is about 643.2086923886.

The spelling of 266106642 in words is "two hundred sixty-six million, one hundred six thousand, six hundred forty-two".