26807197 has 2 divisors, whose sum is σ = 26807198. Its totient is φ = 26807196.

The previous prime is 26807191. The next prime is 26807227. The reversal of 26807197 is 79170862.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16088121 + 10719076 = 4011^2 + 3274^2 .

It is a cyclic number.

It is not a de Polignac number, because 26807197 - 2⁷ = 26807069 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26807191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13403598 + 13403599.

It is an arithmetic number, because the mean of its divisors is an integer number (13403599).

Almost surely, 2^26807197 is an apocalyptic number.

It is an amenable number.

26807197 is a deficient number, since it is larger than the sum of its proper divisors (1).

26807197 is an equidigital number, since it uses as much as digits as its factorization.

26807197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42336, while the sum is 40.

The square root of 26807197 is about 5177.5667064752. The cubic root of 26807197 is about 299.2842083140.

The spelling of 26807197 in words is "twenty-six million, eight hundred seven thousand, one hundred ninety-seven".