26840897 has 2 divisors, whose sum is σ = 26840898. Its totient is φ = 26840896.

The previous prime is 26840881. The next prime is 26840951. The reversal of 26840897 is 79804862.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22363441 + 4477456 = 4729^2 + 2116^2 .

It is a cyclic number.

It is not a de Polignac number, because 26840897 - 2⁴ = 26840881 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (26840837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13420448 + 13420449.

It is an arithmetic number, because the mean of its divisors is an integer number (13420449).

Almost surely, 2^26840897 is an apocalyptic number.

It is an amenable number.

26840897 is a deficient number, since it is larger than the sum of its proper divisors (1).

26840897 is an equidigital number, since it uses as much as digits as its factorization.

26840897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 26840897 is about 5180.8201088245. The cubic root of 26840897 is about 299.4095683602.

The spelling of 26840897 in words is "twenty-six million, eight hundred forty thousand, eight hundred ninety-seven".