266622655 has 16 divisors (see below), whose sum is σ = 345580704. Its totient is φ = 196306560.

The previous prime is 266622641. The next prime is 266622659. The reversal of 266622655 is 556226662.

It is not a de Polignac number, because 266622655 - 2¹³ = 266614463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266622659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16645 + ... + 28465.

It is an arithmetic number, because the mean of its divisors is an integer number (21598794).

Almost surely, 2^266622655 is an apocalyptic number.

266622655 is a deficient number, since it is larger than the sum of its proper divisors (78958049).

266622655 is a wasteful number, since it uses less digits than its factorization.

266622655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12186.

The product of its digits is 259200, while the sum is 40.

The square root of 266622655 is about 16328.5839863719. The cubic root of 266622655 is about 643.6241771247.

The spelling of 266622655 in words is "two hundred sixty-six million, six hundred twenty-two thousand, six hundred fifty-five".