26604 has 18 divisors (see below), whose sum is σ = 67340. Its totient is φ = 8856.

The previous prime is 26597. The next prime is 26627. The reversal of 26604 is 40662.

26604 is a `hidden beast` number, since 2 + 660 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a zygodrome in base 3.

It is an unprimeable number.

26604 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 5 ways as a sum of consecutive naturals, for example, 334 + ... + 405.

2²⁶⁶⁰⁴ is an apocalyptic number.

It is an amenable number.

26604 is an abundant number, since it is smaller than the sum of its proper divisors (40736).

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

26604 is a wasteful number, since it uses less digits than its factorization.

26604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 749 (or 744 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 26604 is about 163.1073266288. The cubic root of 26604 is about 29.8526103960.

It can be divided in two parts, 26 and 604, that added together give a triangular number (630 = T₃₅).

The spelling of 26604 in words is "twenty-six thousand, six hundred four".