26685797 has 2 divisors, whose sum is σ = 26685798. Its totient is φ = 26685796.

The previous prime is 26685787. The next prime is 26685809. The reversal of 26685797 is 79758662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26204161 + 481636 = 5119^2 + 694^2 .

It is a cyclic number.

It is not a de Polignac number, because 26685797 - 2¹⁰ = 26684773 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 (26685787) 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, 13342898 + 13342899.

It is an arithmetic number, because the mean of its divisors is an integer number (13342899).

Almost surely, 2^26685797 is an apocalyptic number.

It is an amenable number.

26685797 is a deficient number, since it is larger than the sum of its proper divisors (1).

26685797 is an equidigital number, since it uses as much as digits as its factorization.

26685797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1270080, while the sum is 50.

The square root of 26685797 is about 5165.8297494207. The cubic root of 26685797 is about 298.8317416655.

The spelling of 26685797 in words is "twenty-six million, six hundred eighty-five thousand, seven hundred ninety-seven".