266461 has 8 divisors (see below), whose sum is σ = 291200. Its totient is φ = 242352.

The previous prime is 266449. The next prime is 266477. The reversal of 266461 is 164662.

266461 = T₁₄ + T₁₅ + ... + T₁₁₆.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 266461 - 2⁷ = 266333 is a prime.

266461 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1240 + ... + 1438.

It is an arithmetic number, because the mean of its divisors is an integer number (36400).

2²⁶⁶⁴⁶¹ is an apocalyptic number.

It is an amenable number.

266461 is a deficient number, since it is larger than the sum of its proper divisors (24739).

266461 is a wasteful number, since it uses less digits than its factorization.

266461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315.

The product of its digits is 1728, while the sum is 25.

The square root of 266461 is about 516.1986051899. The cubic root of 266461 is about 64.3494073025.

It can be divided in two parts, 266 and 461, that added together give a palindrome (727).

The spelling of 266461 in words is "two hundred sixty-six thousand, four hundred sixty-one".