26540866 has 12 divisors (see below), whose sum is σ = 43759926. Its totient is φ = 12063920.

The previous prime is 26540851. The next prime is 26540879. The reversal of 26540866 is 66804562.

It can be written as a sum of positive squares in only one way, i.e., 25050025 + 1490841 = 5005^2 + 1221^2 .

It is an unprimeable number.

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 in 5 ways as a sum of consecutive naturals, for example, 54595 + ... + 55078.

Almost surely, 2^26540866 is an apocalyptic number.

26540866 is a deficient number, since it is larger than the sum of its proper divisors (17219060).

26540866 is a wasteful number, since it uses less digits than its factorization.

26540866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109697 (or 109686 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 26540866 is about 5151.7827982166. The cubic root of 26540866 is about 298.2897726383.

The spelling of 26540866 in words is "twenty-six million, five hundred forty thousand, eight hundred sixty-six".