26458661 has 2 divisors, whose sum is σ = 26458662. Its totient is φ = 26458660.

The previous prime is 26458651. The next prime is 26458669. The reversal of 26458661 is 16685462.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14250625 + 12208036 = 3775^2 + 3494^2 .

It is a cyclic number.

It is not a de Polignac number, because 26458661 - 2¹⁰ = 26457637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26458669) 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, 13229330 + 13229331.

It is an arithmetic number, because the mean of its divisors is an integer number (13229331).

Almost surely, 2^26458661 is an apocalyptic number.

It is an amenable number.

26458661 is a deficient number, since it is larger than the sum of its proper divisors (1).

26458661 is an equidigital number, since it uses as much as digits as its factorization.

26458661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69120, while the sum is 38.

The square root of 26458661 is about 5143.7983047550. The cubic root of 26458661 is about 297.9814899243.

The spelling of 26458661 in words is "twenty-six million, four hundred fifty-eight thousand, six hundred sixty-one".