266997 has 8 divisors (see below), whose sum is σ = 362080. Its totient is φ = 174960.

The previous prime is 266993. The next prime is 266999. The reversal of 266997 is 799662.

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

It is not a de Polignac number, because 266997 - 2² = 266993 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266993) 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, 547 + ... + 912.

It is an arithmetic number, because the mean of its divisors is an integer number (45260).

2²⁶⁶⁹⁹⁷ is an apocalyptic number.

It is an amenable number.

266997 is a deficient number, since it is larger than the sum of its proper divisors (95083).

266997 is a wasteful number, since it uses less digits than its factorization.

266997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1523.

The product of its digits is 40824, while the sum is 39.

The square root of 266997 is about 516.7175243786. The cubic root of 266997 is about 64.3925257841.

The spelling of 266997 in words is "two hundred sixty-six thousand, nine hundred ninety-seven".