266361 has 8 divisors (see below), whose sum is σ = 373920. Its totient is φ = 168192.

The previous prime is 266359. The next prime is 266369. The reversal of 266361 is 163662.

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

It is not a de Polignac number, because 266361 - 2¹ = 266359 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 266361.

It is not an unprimeable number, because it can be changed into a prime (266369) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2280 + ... + 2393.

It is an arithmetic number, because the mean of its divisors is an integer number (46740).

2²⁶⁶³⁶¹ is an apocalyptic number.

It is an amenable number.

266361 is a deficient number, since it is larger than the sum of its proper divisors (107559).

266361 is a wasteful number, since it uses less digits than its factorization.

266361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4695.

The product of its digits is 1296, while the sum is 24.

The square root of 266361 is about 516.1017341571. The cubic root of 266361 is about 64.3413564109.

The spelling of 266361 in words is "two hundred sixty-six thousand, three hundred sixty-one".