8466826021 has 2 divisors, whose sum is σ = 8466826022. Its totient is φ = 8466826020.

The previous prime is 8466826003. The next prime is 8466826063. The reversal of 8466826021 is 1206286648.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6446323521 + 2020502500 = 80289^2 + 44950^2 .

It is a cyclic number.

It is not a de Polignac number, because 8466826021 - 2¹⁷ = 8466694949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8466826001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4233413010 + 4233413011.

It is an arithmetic number, because the mean of its divisors is an integer number (4233413011).

Almost surely, 2^8466826021 is an apocalyptic number.

It is an amenable number.

8466826021 is a deficient number, since it is larger than the sum of its proper divisors (1).

8466826021 is an equidigital number, since it uses as much as digits as its factorization.

8466826021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 221184, while the sum is 43.

The square root of 8466826021 is about 92015.3575279692. The cubic root of 8466826021 is about 2038.1690945456.

The spelling of 8466826021 in words is "eight billion, four hundred sixty-six million, eight hundred twenty-six thousand, twenty-one".