26561656 has 32 divisors (see below), whose sum is σ = 54529200. Its totient is φ = 12029440.

The previous prime is 26561641. The next prime is 26561663. The reversal of 26561656 is 65616562.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44496 + ... + 45088.

Almost surely, 2^26561656 is an apocalyptic number.

It is an amenable number.

26561656 is an abundant number, since it is smaller than the sum of its proper divisors (27967544).

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

26561656 is a wasteful number, since it uses less digits than its factorization.

26561656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1119 (or 1115 counting only the distinct ones).

The product of its digits is 64800, while the sum is 37.

The square root of 26561656 is about 5153.8001513446. The cubic root of 26561656 is about 298.3676377921.

The spelling of 26561656 in words is "twenty-six million, five hundred sixty-one thousand, six hundred fifty-six".