26656481 has 4 divisors (see below), whose sum is σ = 27575700. Its totient is φ = 25737264.

The previous prime is 26656463. The next prime is 26656499. The reversal of 26656481 is 18465662.

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

It is an interprime number because it is at equal distance from previous prime (26656463) and next prime (26656499).

It can be written as a sum of positive squares in 2 ways, for example, as 17505856 + 9150625 = 4184^2 + 3025^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26656481 is a prime.

It is a super-2 number, since 2×26656481² = 1421135958606722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26656381) 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, 459566 + ... + 459623.

It is an arithmetic number, because the mean of its divisors is an integer number (6893925).

Almost surely, 2^26656481 is an apocalyptic number.

It is an amenable number.

26656481 is a deficient number, since it is larger than the sum of its proper divisors (919219).

26656481 is an equidigital number, since it uses as much as digits as its factorization.

26656481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 919218.

The product of its digits is 69120, while the sum is 38.

The square root of 26656481 is about 5162.9914778159. The cubic root of 26656481 is about 298.7222731806.

The spelling of 26656481 in words is "twenty-six million, six hundred fifty-six thousand, four hundred eighty-one".