26690065 has 4 divisors (see below), whose sum is σ = 32028084. Its totient is φ = 21352048.

The previous prime is 26690047. The next prime is 26690077. The reversal of 26690065 is 56009662.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19421649 + 7268416 = 4407^2 + 2696^2 .

It is a cyclic number.

It is not a de Polignac number, because 26690065 - 2⁵ = 26690033 is a prime.

It is a super-3 number, since 3×26690065³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26690065.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2669002 + ... + 2669011.

It is an arithmetic number, because the mean of its divisors is an integer number (8007021).

Almost surely, 2^26690065 is an apocalyptic number.

It is an amenable number.

26690065 is a deficient number, since it is larger than the sum of its proper divisors (5338019).

26690065 is an equidigital number, since it uses as much as digits as its factorization.

26690065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5338018.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 26690065 is about 5166.2428320783. The cubic root of 26690065 is about 298.8476720608.

The spelling of 26690065 in words is "twenty-six million, six hundred ninety thousand, sixty-five".