266830 has 8 divisors (see below), whose sum is σ = 480312. Its totient is φ = 106728.

The previous prime is 266821. The next prime is 266837. The reversal of 266830 is 38662.

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

It is a junction number, because it is equal to n+sod(n) for n = 266795 and 266804.

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 pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13332 + ... + 13351.

It is an arithmetic number, because the mean of its divisors is an integer number (60039).

2²⁶⁶⁸³⁰ is an apocalyptic number.

266830 is a deficient number, since it is larger than the sum of its proper divisors (213482).

266830 is a wasteful number, since it uses less digits than its factorization.

266830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26690.

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

The square root of 266830 is about 516.5559021055. Note that the first 3 decimals coincide. The cubic root of 266830 is about 64.3790976749.

It can be divided in two parts, 266 and 830, that multiplied together give a triangular number (220780 = T₆₆₄).

The spelling of 266830 in words is "two hundred sixty-six thousand, eight hundred thirty".