26897 has 4 divisors (see below), whose sum is σ = 28980. Its totient is φ = 24816.

The previous prime is 26893. The next prime is 26903. The reversal of 26897 is 79862.

It is a Cunningham number, because it is equal to 164²+1.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4096 + 22801 = 64^2 + 151^2 .

It is a cyclic number.

It is not a de Polignac number, because 26897 - 2² = 26893 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 8 and base 13.

It is not an unprimeable number, because it can be changed into a prime (26891) 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, 1022 + ... + 1047.

It is an arithmetic number, because the mean of its divisors is an integer number (7245).

2²⁶⁸⁹⁷ is an apocalyptic number.

It is an amenable number.

26897 is a deficient number, since it is larger than the sum of its proper divisors (2083).

26897 is a wasteful number, since it uses less digits than its factorization.

26897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2082.

The product of its digits is 6048, while the sum is 32.

The square root of 26897 is about 164.0030487521. The cubic root of 26897 is about 29.9618032394.

The spelling of 26897 in words is "twenty-six thousand, eight hundred ninety-seven".