26260609 has 2 divisors, whose sum is σ = 26260610. Its totient is φ = 26260608.

The previous prime is 26260579. The next prime is 26260621. The reversal of 26260609 is 90606262.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13300609 + 12960000 = 3647^2 + 3600^2 .

It is a cyclic number.

It is not a de Polignac number, because 26260609 - 2⁹ = 26260097 is a prime.

It is not a weakly prime, because it can be changed into another prime (26260309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13130304 + 13130305.

It is an arithmetic number, because the mean of its divisors is an integer number (13130305).

Almost surely, 2^26260609 is an apocalyptic number.

It is an amenable number.

26260609 is a deficient number, since it is larger than the sum of its proper divisors (1).

26260609 is an equidigital number, since it uses as much as digits as its factorization.

26260609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 26260609 is about 5124.5106107803. The cubic root of 26260609 is about 297.2361297491.

It can be divided in two parts, 26260 and 609, that multiplied together give a triangular number (15992340 = T₅₆₅₅).

The spelling of 26260609 in words is "twenty-six million, two hundred sixty thousand, six hundred nine".