26801897 has 2 divisors, whose sum is σ = 26801898. Its totient is φ = 26801896.

The previous prime is 26801893. The next prime is 26801899. The reversal of 26801897 is 79810862.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18826921 + 7974976 = 4339^2 + 2824^2 .

It is a cyclic number.

It is not a de Polignac number, because 26801897 - 2² = 26801893 is a prime.

Together with 26801899, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (26801893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13400948 + 13400949.

It is an arithmetic number, because the mean of its divisors is an integer number (13400949).

Almost surely, 2^26801897 is an apocalyptic number.

It is an amenable number.

26801897 is a deficient number, since it is larger than the sum of its proper divisors (1).

26801897 is an equidigital number, since it uses as much as digits as its factorization.

26801897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 26801897 is about 5177.0548577352. The cubic root of 26801897 is about 299.2644833766.

The spelling of 26801897 in words is "twenty-six million, eight hundred one thousand, eight hundred ninety-seven".