26698069 has 2 divisors, whose sum is σ = 26698070. Its totient is φ = 26698068.

The previous prime is 26698051. The next prime is 26698103. The reversal of 26698069 is 96089662.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16851025 + 9847044 = 4105^2 + 3138^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26698069 is a prime.

It is a super-2 number, since 2×26698069² = 1425573776657522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26698019) 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, 13349034 + 13349035.

It is an arithmetic number, because the mean of its divisors is an integer number (13349035).

Almost surely, 2^26698069 is an apocalyptic number.

It is an amenable number.

26698069 is a deficient number, since it is larger than the sum of its proper divisors (1).

26698069 is an equidigital number, since it uses as much as digits as its factorization.

26698069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 279936, while the sum is 46.

The square root of 26698069 is about 5167.0174182017. The cubic root of 26698069 is about 298.8775425725.

The spelling of 26698069 in words is "twenty-six million, six hundred ninety-eight thousand, sixty-nine".