26535661 has 2 divisors, whose sum is σ = 26535662. Its totient is φ = 26535660.

The previous prime is 26535637. The next prime is 26535701. The reversal of 26535661 is 16653562.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22982436 + 3553225 = 4794^2 + 1885^2 .

It is a cyclic number.

It is not a de Polignac number, because 26535661 - 2¹³ = 26527469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26535631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13267830 + 13267831.

It is an arithmetic number, because the mean of its divisors is an integer number (13267831).

Almost surely, 2^26535661 is an apocalyptic number.

It is an amenable number.

26535661 is a deficient number, since it is larger than the sum of its proper divisors (1).

26535661 is an equidigital number, since it uses as much as digits as its factorization.

26535661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32400, while the sum is 34.

The square root of 26535661 is about 5151.2776085162. The cubic root of 26535661 is about 298.2702718959.

The spelling of 26535661 in words is "twenty-six million, five hundred thirty-five thousand, six hundred sixty-one".