266497 has 8 divisors (see below), whose sum is σ = 332352. Its totient is φ = 207600.

The previous prime is 266491. The next prime is 266521. The reversal of 266497 is 794662.

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

It is a cyclic number.

It is not a de Polignac number, because 266497 - 2³ = 266489 is a prime.

It is a Duffinian number.

266497 is a lucky 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 7 ways as a sum of consecutive naturals, for example, 1654 + ... + 1807.

It is an arithmetic number, because the mean of its divisors is an integer number (41544).

2²⁶⁶⁴⁹⁷ is an apocalyptic number.

It is an amenable number.

266497 is a deficient number, since it is larger than the sum of its proper divisors (65855).

266497 is a wasteful number, since it uses less digits than its factorization.

266497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3479.

The product of its digits is 18144, while the sum is 34.

The square root of 266497 is about 516.2334743118. The cubic root of 266497 is about 64.3523051304.

The spelling of 266497 in words is "two hundred sixty-six thousand, four hundred ninety-seven".