26997 has 4 divisors (see below), whose sum is σ = 36000. Its totient is φ = 17996.

The previous prime is 26993. The next prime is 27011. The reversal of 26997 is 79962.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 26997 - 2² = 26993 is a prime.

It is a D-number.

26997 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26993) 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, 4497 + ... + 4502.

It is an arithmetic number, because the mean of its divisors is an integer number (9000).

2²⁶⁹⁹⁷ is an apocalyptic number.

It is an amenable number.

26997 is a deficient number, since it is larger than the sum of its proper divisors (9003).

26997 is an equidigital number, since it uses as much as digits as its factorization.

26997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9002.

The product of its digits is 6804, while the sum is 33.

The square root of 26997 is about 164.3076382887. The cubic root of 26997 is about 29.9988888477.

The spelling of 26997 in words is "twenty-six thousand, nine hundred ninety-seven".