266724 has 36 divisors (see below), whose sum is σ = 698880. Its totient is φ = 85680.

The previous prime is 266719. The next prime is 266759. The reversal of 266724 is 427662.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×266724² = 142283384352, which contains 22 as substring.

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 11 ways as a sum of consecutive naturals, for example, 997 + ... + 1235.

2²⁶⁶⁷²⁴ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 266724, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (349440).

266724 is an abundant number, since it is smaller than the sum of its proper divisors (432156).

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

266724 is a wasteful number, since it uses less digits than its factorization.

266724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280 (or 275 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 266724 is about 516.4532892721. The cubic root of 266724 is about 64.3705715369.

It can be divided in two parts, 266 and 724, that added together give a triangular number (990 = T₄₄).

The spelling of 266724 in words is "two hundred sixty-six thousand, seven hundred twenty-four".