266606 has 4 divisors (see below), whose sum is σ = 399912. Its totient is φ = 133302.

The previous prime is 266603. The next prime is 266633. The reversal of 266606 is 606662.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

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 266606.

It is not an unprimeable number, because it can be changed into a prime (266603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66650 + ... + 66653.

It is an arithmetic number, because the mean of its divisors is an integer number (99978).

2²⁶⁶⁶⁰⁶ is an apocalyptic number.

266606 is a deficient number, since it is larger than the sum of its proper divisors (133306).

266606 is a wasteful number, since it uses less digits than its factorization.

266606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133305.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 266606 is about 516.3390359057. The cubic root of 266606 is about 64.3610775183.

The spelling of 266606 in words is "two hundred sixty-six thousand, six hundred six".