26691461 has 2 divisors, whose sum is σ = 26691462. Its totient is φ = 26691460.

The previous prime is 26691407. The next prime is 26691491. The reversal of 26691461 is 16419662.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26061025 + 630436 = 5105^2 + 794^2 .

It is a cyclic number.

It is not a de Polignac number, because 26691461 - 2¹⁰ = 26690437 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26691491) 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, 13345730 + 13345731.

It is an arithmetic number, because the mean of its divisors is an integer number (13345731).

Almost surely, 2^26691461 is an apocalyptic number.

It is an amenable number.

26691461 is a deficient number, since it is larger than the sum of its proper divisors (1).

26691461 is an equidigital number, since it uses as much as digits as its factorization.

26691461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15552, while the sum is 35.

The square root of 26691461 is about 5166.3779381691. The cubic root of 26691461 is about 298.8528822901.

The spelling of 26691461 in words is "twenty-six million, six hundred ninety-one thousand, four hundred sixty-one".