266836 has 12 divisors (see below), whose sum is σ = 491680. Its totient is φ = 126360.

The previous prime is 266821. The next prime is 266837. The reversal of 266836 is 638662.

266836 = T₉₉ + T₁₀₀ + ... + T₁₃₆.

It is a junction number, because it is equal to n+sod(n) for n = 266798 and 266807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266837) 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, 1680 + ... + 1831.

2²⁶⁶⁸³⁶ is an apocalyptic number.

It is an amenable number.

266836 is a deficient number, since it is larger than the sum of its proper divisors (224844).

266836 is a wasteful number, since it uses less digits than its factorization.

266836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3534 (or 3532 counting only the distinct ones).

The product of its digits is 10368, while the sum is 31.

The square root of 266836 is about 516.5617097695. The cubic root of 266836 is about 64.3795802189.

It can be divided in two parts, 2668 and 36, that added together give a square (2704 = 52²).

The spelling of 266836 in words is "two hundred sixty-six thousand, eight hundred thirty-six".