266875 has 20 divisors (see below), whose sum is σ = 387376. Its totient is φ = 180000.

The previous prime is 266867. The next prime is 266891. The reversal of 266875 is 578662.

It is not a de Polignac number, because 266875 - 2³ = 266867 is a prime.

It is a super-4 number, since 4×266875⁴ (a number of 23 digits) contains 4444 as substring.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

266875 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 266875.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4345 + ... + 4405.

2²⁶⁶⁸⁷⁵ is an apocalyptic number.

266875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

266875 is a deficient number, since it is larger than the sum of its proper divisors (120501).

266875 is an frugal number, since it uses more digits than its factorization.

266875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88 (or 73 counting only the distinct ones).

The product of its digits is 20160, while the sum is 34.

The square root of 266875 is about 516.5994579943. The cubic root of 266875 is about 64.3827165790.

The spelling of 266875 in words is "two hundred sixty-six thousand, eight hundred seventy-five".