826468861 has 2 divisors, whose sum is σ = 826468862. Its totient is φ = 826468860.

The previous prime is 826468831. The next prime is 826468871. The reversal of 826468861 is 168864628.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 636552900 + 189915961 = 25230^2 + 13781^2 .

It is a cyclic number.

It is not a de Polignac number, because 826468861 - 2¹³ = 826460669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (826468801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 413234430 + 413234431.

It is an arithmetic number, because the mean of its divisors is an integer number (413234431).

Almost surely, 2^826468861 is an apocalyptic number.

It is an amenable number.

826468861 is a deficient number, since it is larger than the sum of its proper divisors (1).

826468861 is an equidigital number, since it uses as much as digits as its factorization.

826468861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 884736, while the sum is 49.

The square root of 826468861 is about 28748.3714495274. The cubic root of 826468861 is about 938.4450151132.

The spelling of 826468861 in words is "eight hundred twenty-six million, four hundred sixty-eight thousand, eight hundred sixty-one".