266649322 has 16 divisors (see below), whose sum is σ = 411356232. Its totient is φ = 129556480.

The previous prime is 266649311. The next prime is 266649329. The reversal of 266649322 is 223946662.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 154480041 + 112169281 = 12429^2 + 10591^2 .

It is a super-2 number, since 2×266649322² = 142203721846119368, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (266649329) 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 7 ways as a sum of consecutive naturals, for example, 14748 + ... + 27400.

Almost surely, 2^266649322 is an apocalyptic number.

266649322 is a deficient number, since it is larger than the sum of its proper divisors (144706910).

266649322 is a wasteful number, since it uses less digits than its factorization.

266649322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12953.

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

The square root of 266649322 is about 16329.4005401301. The cubic root of 266649322 is about 643.6456343582.

The spelling of 266649322 in words is "two hundred sixty-six million, six hundred forty-nine thousand, three hundred twenty-two".