26663560 has 96 divisors (see below), whose sum is σ = 75458880. Its totient is φ = 8300160.

The previous prime is 26663519. The next prime is 26663561. The reversal of 26663560 is 6536662.

It is not an unprimeable number, because it can be changed into a prime (26663561) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33487 + ... + 34273.

It is an arithmetic number, because the mean of its divisors is an integer number (786030).

Almost surely, 2^26663560 is an apocalyptic number.

26663560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26663560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37729440).

26663560 is an abundant number, since it is smaller than the sum of its proper divisors (48795320).

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

26663560 is a wasteful number, since it uses less digits than its factorization.

26663560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 827 (or 812 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 34.

The square root of 26663560 is about 5163.6769844753. The cubic root of 26663560 is about 298.7487141276.

It can be divided in two parts, 2666 and 3560, that added together give a palindrome (6226).

The spelling of 26663560 in words is "twenty-six million, six hundred sixty-three thousand, five hundred sixty".