26566641 has 6 divisors (see below), whose sum is σ = 38374050. Its totient is φ = 17711088.

The previous prime is 26566627. The next prime is 26566649. The reversal of 26566641 is 14666562.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 24800400 + 1766241 = 4980^2 + 1329^2 .

It is not a de Polignac number, because 26566641 - 2⁶ = 26566577 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 26566596 and 26566605.

It is not an unprimeable number, because it can be changed into a prime (26566649) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1475916 + ... + 1475933.

It is an arithmetic number, because the mean of its divisors is an integer number (6395675).

Almost surely, 2^26566641 is an apocalyptic number.

It is an amenable number.

26566641 is a deficient number, since it is larger than the sum of its proper divisors (11807409).

26566641 is a wasteful number, since it uses less digits than its factorization.

26566641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2951855 (or 2951852 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 26566641 is about 5154.2837523753. The cubic root of 26566641 is about 298.3863021610.

The spelling of 26566641 in words is "twenty-six million, five hundred sixty-six thousand, six hundred forty-one".