26680789 has 2 divisors, whose sum is σ = 26680790. Its totient is φ = 26680788.

The previous prime is 26680781. The next prime is 26680793. The reversal of 26680789 is 98708662.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26471025 + 209764 = 5145^2 + 458^2 .

It is a cyclic number.

It is not a de Polignac number, because 26680789 - 2³ = 26680781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26680781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13340394 + 13340395.

It is an arithmetic number, because the mean of its divisors is an integer number (13340395).

Almost surely, 2^26680789 is an apocalyptic number.

It is an amenable number.

26680789 is a deficient number, since it is larger than the sum of its proper divisors (1).

26680789 is an equidigital number, since it uses as much as digits as its factorization.

26680789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 26680789 is about 5165.3450029983. The cubic root of 26680789 is about 298.8130470394.

The spelling of 26680789 in words is "twenty-six million, six hundred eighty thousand, seven hundred eighty-nine".