26997769 has 2 divisors, whose sum is σ = 26997770. Its totient is φ = 26997768.

The previous prime is 26997713. The next prime is 26997797. The reversal of 26997769 is 96779962.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22848400 + 4149369 = 4780^2 + 2037^2 .

It is a cyclic number.

It is not a de Polignac number, because 26997769 - 2¹⁹ = 26473481 is a prime.

It is a super-2 number, since 2×26997769² = 1457759061954722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (26997709) 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, 13498884 + 13498885.

It is an arithmetic number, because the mean of its divisors is an integer number (13498885).

Almost surely, 2^26997769 is an apocalyptic number.

It is an amenable number.

26997769 is a deficient number, since it is larger than the sum of its proper divisors (1).

26997769 is an equidigital number, since it uses as much as digits as its factorization.

26997769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2571912, while the sum is 55.

The square root of 26997769 is about 5195.9377401967. The cubic root of 26997769 is about 299.9917368094.

The spelling of 26997769 in words is "twenty-six million, nine hundred ninety-seven thousand, seven hundred sixty-nine".