266960 has 40 divisors (see below), whose sum is σ = 642816. Its totient is φ = 103040.

The previous prime is 266957. The next prime is 266971. The reversal of 266960 is 69662.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3725 + ... + 3795.

2²⁶⁶⁹⁶⁰ is an apocalyptic number.

266960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 266960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (321408).

266960 is an abundant number, since it is smaller than the sum of its proper divisors (375856).

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

266960 is a wasteful number, since it uses less digits than its factorization.

266960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131 (or 125 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 266960 is about 516.6817202108. The cubic root of 266960 is about 64.3895511770.

The spelling of 266960 in words is "two hundred sixty-six thousand, nine hundred sixty".