26506 has 8 divisors (see below), whose sum is σ = 41220. Its totient is φ = 12768.

The previous prime is 26501. The next prime is 26513. The reversal of 26506 is 60562.

It can be written as a sum of positive squares in 2 ways, for example, as 25281 + 1225 = 159^2 + 35^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (26501) 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, 171 + ... + 286.

2²⁶⁵⁰⁶ is an apocalyptic number.

26506 is a deficient number, since it is larger than the sum of its proper divisors (14714).

26506 is a wasteful number, since it uses less digits than its factorization.

26506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 26506 is about 162.8066337715. The cubic root of 26506 is about 29.8159097065.

The spelling of 26506 in words is "twenty-six thousand, five hundred six".