266563122 has 48 divisors (see below), whose sum is σ = 643079232. Its totient is φ = 72148320.

The previous prime is 266563117. The next prime is 266563147. The reversal of 266563122 is 221365662.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 6372 + ... + 23952.

It is an arithmetic number, because the mean of its divisors is an integer number (13397484).

Almost surely, 2^266563122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 266563122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (321539616).

266563122 is an abundant number, since it is smaller than the sum of its proper divisors (376516110).

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

266563122 is a wasteful number, since it uses less digits than its factorization.

266563122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17631 (or 17612 counting only the distinct ones).

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

The square root of 266563122 is about 16326.7609157481. The cubic root of 266563122 is about 643.5762695549.

The spelling of 266563122 in words is "two hundred sixty-six million, five hundred sixty-three thousand, one hundred twenty-two".