827804881 has 2 divisors, whose sum is σ = 827804882. Its totient is φ = 827804880.

The previous prime is 827804867. The next prime is 827804893. The reversal of 827804881 is 188408728.

It is a happy number.

827804881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 773340481 + 54464400 = 27809^2 + 7380^2 .

It is a cyclic number.

It is not a de Polignac number, because 827804881 - 2⁵ = 827804849 is a prime.

It is a super-2 number, since 2×827804881² = 1370521842014848322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (827804821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 413902440 + 413902441.

It is an arithmetic number, because the mean of its divisors is an integer number (413902441).

Almost surely, 2^827804881 is an apocalyptic number.

It is an amenable number.

827804881 is a deficient number, since it is larger than the sum of its proper divisors (1).

827804881 is an equidigital number, since it uses as much as digits as its factorization.

827804881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 229376, while the sum is 46.

The square root of 827804881 is about 28771.5985131171. The cubic root of 827804881 is about 938.9504208533.

The spelling of 827804881 in words is "eight hundred twenty-seven million, eight hundred four thousand, eight hundred eighty-one".