266629 has 4 divisors (see below), whose sum is σ = 290880. Its totient is φ = 242380.

The previous prime is 266603. The next prime is 266633. The reversal of 266629 is 926662.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 266629 - 2⁹ = 266117 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 266629.

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 266629.

It is not an unprimeable number, because it can be changed into a prime (266689) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12109 + ... + 12130.

It is an arithmetic number, because the mean of its divisors is an integer number (72720).

2²⁶⁶⁶²⁹ is an apocalyptic number.

It is an amenable number.

266629 is a deficient number, since it is larger than the sum of its proper divisors (24251).

266629 is a wasteful number, since it uses less digits than its factorization.

266629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24250.

The product of its digits is 7776, while the sum is 31.

The square root of 266629 is about 516.3613076132. The cubic root of 266629 is about 64.3629282671.

The spelling of 266629 in words is "two hundred sixty-six thousand, six hundred twenty-nine".