26663 has 8 divisors (see below), whose sum is σ = 32928. Its totient is φ = 21024.

The previous prime is 26647. The next prime is 26669. The reversal of 26663 is 36662.

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 26663 - 2⁴ = 26647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56 + ... + 237.

It is an arithmetic number, because the mean of its divisors is an integer number (4116).

2²⁶⁶⁶³ is an apocalyptic number.

26663 is a deficient number, since it is larger than the sum of its proper divisors (6265).

26663 is a wasteful number, since it uses less digits than its factorization.

26663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313.

The product of its digits is 1296, while the sum is 23.

The square root of 26663 is about 163.2880889716. The cubic root of 26663 is about 29.8746622628.

Subtracting 26663 from its reverse (36662), we obtain a palindrome (9999).

The spelling of 26663 in words is "twenty-six thousand, six hundred sixty-three".