26826661 has 2 divisors, whose sum is σ = 26826662. Its totient is φ = 26826660.

The previous prime is 26826649. The next prime is 26826673. The reversal of 26826661 is 16662862.

It is the 2115-th star number.

It is a balanced prime because it is at equal distance from previous prime (26826649) and next prime (26826673).

It can be written as a sum of positive squares in only one way, i.e., 20196036 + 6630625 = 4494^2 + 2575^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26826661 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 26826661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26826601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13413330 + 13413331.

It is an arithmetic number, because the mean of its divisors is an integer number (13413331).

Almost surely, 2^26826661 is an apocalyptic number.

It is an amenable number.

26826661 is a deficient number, since it is larger than the sum of its proper divisors (1).

26826661 is an equidigital number, since it uses as much as digits as its factorization.

26826661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 37.

The square root of 26826661 is about 5179.4460128473. The cubic root of 26826661 is about 299.3566249184.

The spelling of 26826661 in words is "twenty-six million, eight hundred twenty-six thousand, six hundred sixty-one".