26090565 has 16 divisors (see below), whose sum is σ = 42318528. Its totient is φ = 13723776.

The previous prime is 26090557. The next prime is 26090573. The reversal of 26090565 is 56509062.

It is an interprime number because it is at equal distance from previous prime (26090557) and next prime (26090573).

It is not a de Polignac number, because 26090565 - 2³ = 26090557 is a prime.

It is a super-3 number, since 3×26090565³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10819 + ... + 13008.

It is an arithmetic number, because the mean of its divisors is an integer number (2644908).

Almost surely, 2^26090565 is an apocalyptic number.

It is an amenable number.

26090565 is a deficient number, since it is larger than the sum of its proper divisors (16227963).

26090565 is a wasteful number, since it uses less digits than its factorization.

26090565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23908.

The product of its (nonzero) digits is 16200, while the sum is 33.

The square root of 26090565 is about 5107.8924225164. The cubic root of 26090565 is about 296.5931806091.

The spelling of 26090565 in words is "twenty-six million, ninety thousand, five hundred sixty-five".