266799 has 8 divisors (see below), whose sum is σ = 383152. Its totient is φ = 164160.

The previous prime is 266797. The next prime is 266801. The reversal of 266799 is 997662.

It is an interprime number because it is at equal distance from previous prime (266797) and next prime (266801).

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

It is not a de Polignac number, because 266799 - 2¹ = 266797 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 6841 = 266799 / (2 + 6 + 6 + 7 + 9 + 9).

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266797) 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, 3382 + ... + 3459.

It is an arithmetic number, because the mean of its divisors is an integer number (47894).

2²⁶⁶⁷⁹⁹ is an apocalyptic number.

266799 is a deficient number, since it is larger than the sum of its proper divisors (116353).

266799 is a wasteful number, since it uses less digits than its factorization.

266799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6857.

The product of its digits is 40824, while the sum is 39.

The square root of 266799 is about 516.5258948010. The cubic root of 266799 is about 64.3766044153.

The spelling of 266799 in words is "two hundred sixty-six thousand, seven hundred ninety-nine".