263166 has 16 divisors (see below), whose sum is σ = 549504. Its totient is φ = 83864.

The previous prime is 263129. The next prime is 263167. The reversal of 263166 is 661362.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263167) by changing a digit.

263166 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 816 + ... + 1091.

It is an arithmetic number, because the mean of its divisors is an integer number (34344).

2²⁶³¹⁶⁶ is an apocalyptic number.

263166 is an abundant number, since it is smaller than the sum of its proper divisors (286338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

263166 is a wasteful number, since it uses less digits than its factorization.

263166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1935.

The product of its digits is 1296, while the sum is 24.

The square root of 263166 is about 512.9970760151. The cubic root of 263166 is about 64.0830627229.

Adding to 263166 its product of digits (1296), we get a palindrome (264462).

The spelling of 263166 in words is "two hundred sixty-three thousand, one hundred sixty-six".