26168609 has 2 divisors, whose sum is σ = 26168610. Its totient is φ = 26168608.

The previous prime is 26168579. The next prime is 26168629. The reversal of 26168609 is 90686162.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26061025 + 107584 = 5105^2 + 328^2 .

It is a cyclic number.

It is not a de Polignac number, because 26168609 - 2¹⁶ = 26103073 is a prime.

It is not a weakly prime, because it can be changed into another prime (26168629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13084304 + 13084305.

It is an arithmetic number, because the mean of its divisors is an integer number (13084305).

Almost surely, 2^26168609 is an apocalyptic number.

It is an amenable number.

26168609 is a deficient number, since it is larger than the sum of its proper divisors (1).

26168609 is an equidigital number, since it uses as much as digits as its factorization.

26168609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 26168609 is about 5115.5262681370. The cubic root of 26168609 is about 296.8886166091. Note that the first 3 decimals are identical.

It can be divided in two parts, 26 and 168609, that multiplied together give a palindrome (4383834).

The spelling of 26168609 in words is "twenty-six million, one hundred sixty-eight thousand, six hundred nine".