26505564 has 12 divisors (see below), whose sum is σ = 61846344. Its totient is φ = 8835184.

The previous prime is 26505559. The next prime is 26505569. The reversal of 26505564 is 46550562.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (26505559) and next prime (26505569).

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26505569) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1104387 + ... + 1104410.

It is an arithmetic number, because the mean of its divisors is an integer number (5153862).

Almost surely, 2^26505564 is an apocalyptic number.

It is an amenable number.

26505564 is an abundant number, since it is smaller than the sum of its proper divisors (35340780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26505564 is a wasteful number, since it uses less digits than its factorization.

26505564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2208804 (or 2208802 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 33.

The square root of 26505564 is about 5148.3554655832. The cubic root of 26505564 is about 298.1574622387.

The spelling of 26505564 in words is "twenty-six million, five hundred five thousand, five hundred sixty-four".