266661322 has 8 divisors (see below), whose sum is σ = 413784900. Its totient is φ = 128733024.

The previous prime is 266661313. The next prime is 266661323. The reversal of 266661322 is 223166662.

It can be written as a sum of positive squares in 2 ways, for example, as 254051721 + 12609601 = 15939^2 + 3551^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×266661322² = 142216521301575368, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (266661323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2298747 + ... + 2298862.

Almost surely, 2^266661322 is an apocalyptic number.

266661322 is a deficient number, since it is larger than the sum of its proper divisors (147123578).

266661322 is a wasteful number, since it uses less digits than its factorization.

266661322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4597640.

The product of its digits is 31104, while the sum is 34.

The square root of 266661322 is about 16329.7679714073. The cubic root of 266661322 is about 643.6552895259.

The spelling of 266661322 in words is "two hundred sixty-six million, six hundred sixty-one thousand, three hundred twenty-two".