266494 has 8 divisors (see below), whose sum is σ = 420840. Its totient is φ = 126216.

The previous prime is 266491. The next prime is 266521. The reversal of 266494 is 494662.

266494 = T₄₂₀ + T₄₂₁ + T₄₂₂.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266491) 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, 3469 + ... + 3544.

It is an arithmetic number, because the mean of its divisors is an integer number (52605).

2²⁶⁶⁴⁹⁴ is an apocalyptic number.

266494 is the 422-nd centered triangular number.

266494 is a deficient number, since it is larger than the sum of its proper divisors (154346).

266494 is a wasteful number, since it uses less digits than its factorization.

266494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7034.

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

The square root of 266494 is about 516.2305686416. The cubic root of 266494 is about 64.3520636547.

The spelling of 266494 in words is "two hundred sixty-six thousand, four hundred ninety-four".