26670 has 32 divisors (see below), whose sum is σ = 73728. Its totient is φ = 6048.

The previous prime is 26669. The next prime is 26681. The reversal of 26670 is 7662.

It is a super-2 number, since 2×26670² = 1422577800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 147 + ... + 273.

It is an arithmetic number, because the mean of its divisors is an integer number (2304).

2²⁶⁶⁷⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36864).

26670 is an abundant number, since it is smaller than the sum of its proper divisors (47058).

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

26670 is a wasteful number, since it uses less digits than its factorization.

26670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144.

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 26670 is about 163.3095220739. The cubic root of 26670 is about 29.8772764265.

It can be divided in two parts, 26 and 670, that added together give a palindrome (696).

The spelling of 26670 in words is "twenty-six thousand, six hundred seventy".