26680469 has 2 divisors, whose sum is σ = 26680470. Its totient is φ = 26680468.

The previous prime is 26680453. The next prime is 26680517. The reversal of 26680469 is 96408662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26646244 + 34225 = 5162^2 + 185^2 .

It is a cyclic number.

It is not a de Polignac number, because 26680469 - 2⁴ = 26680453 is a prime.

It is a super-2 number, since 2×26680469² = 1423694852119922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26680439) 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, 13340234 + 13340235.

It is an arithmetic number, because the mean of its divisors is an integer number (13340235).

Almost surely, 2^26680469 is an apocalyptic number.

It is an amenable number.

26680469 is a deficient number, since it is larger than the sum of its proper divisors (1).

26680469 is an equidigital number, since it uses as much as digits as its factorization.

26680469 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 26680469 is about 5165.3140272398. The cubic root of 26680469 is about 298.8118524151.

The spelling of 26680469 in words is "twenty-six million, six hundred eighty thousand, four hundred sixty-nine".