26486561 has 12 divisors (see below), whose sum is σ = 28908348. Its totient is φ = 24244992.

The previous prime is 26486557. The next prime is 26486563. The reversal of 26486561 is 16568462.

It can be written as a sum of positive squares in 6 ways, for example, as 6630625 + 19855936 = 2575^2 + 4456^2 .

It is not a de Polignac number, because 26486561 - 2² = 26486557 is a prime.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26486563) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9455 + ... + 11931.

It is an arithmetic number, because the mean of its divisors is an integer number (2409029).

Almost surely, 2^26486561 is an apocalyptic number.

It is an amenable number.

26486561 is a deficient number, since it is larger than the sum of its proper divisors (2421787).

26486561 is a wasteful number, since it uses less digits than its factorization.

26486561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2548 (or 2531 counting only the distinct ones).

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

The square root of 26486561 is about 5146.5095938898. The cubic root of 26486561 is about 298.0861911547.

The spelling of 26486561 in words is "twenty-six million, four hundred eighty-six thousand, five hundred sixty-one".