266722 has 8 divisors (see below), whose sum is σ = 421200. Its totient is φ = 126324.

The previous prime is 266719. The next prime is 266759. The reversal of 266722 is 227662.

It is a happy number.

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

It is a super-2 number, since 2×266722² = 142281250568, which contains 22 as substring.

It is a plaindrome in base 9.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3472 + ... + 3547.

It is an arithmetic number, because the mean of its divisors is an integer number (52650).

2²⁶⁶⁷²² is an apocalyptic number.

266722 is a deficient number, since it is larger than the sum of its proper divisors (154478).

266722 is a wasteful number, since it uses less digits than its factorization.

266722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7040.

The product of its digits is 2016, while the sum is 25.

The square root of 266722 is about 516.4513529850. The cubic root of 266722 is about 64.3704106446.

Subtracting from 266722 its reverse (227662), we obtain a triangular number (39060 = T₂₇₉).

The spelling of 266722 in words is "two hundred sixty-six thousand, seven hundred twenty-two".