26668 has 12 divisors (see below), whose sum is σ = 47880. Its totient is φ = 12992.

The previous prime is 26647. The next prime is 26669. The reversal of 26668 is 86662.

It is a happy number.

It is a super-2 number, since 2×26668² = 1422364448, which contains 22 as substring.

26668 is an undulating number in base 15.

It is a plaindrome in base 10.

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180 + ... + 292.

It is an arithmetic number, because the mean of its divisors is an integer number (3990).

2²⁶⁶⁶⁸ is an apocalyptic number.

It is an amenable number.

26668 is a deficient number, since it is larger than the sum of its proper divisors (21212).

26668 is a wasteful number, since it uses less digits than its factorization.

26668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176 (or 174 counting only the distinct ones).

The product of its digits is 3456, while the sum is 28.

The square root of 26668 is about 163.3033986174. The cubic root of 26668 is about 29.8765295693.

It can be divided in two parts, 2 and 6668, that added together give a triangular number (6670 = T₁₁₅).

The spelling of 26668 in words is "twenty-six thousand, six hundred sixty-eight".