806478833 has 2 divisors, whose sum is σ = 806478834. Its totient is φ = 806478832.

The previous prime is 806478823. The next prime is 806478863. The reversal of 806478833 is 338874608.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 638724529 + 167754304 = 25273^2 + 12952^2 .

It is a cyclic number.

It is not a de Polignac number, because 806478833 - 2⁸ = 806478577 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (806478823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 403239416 + 403239417.

It is an arithmetic number, because the mean of its divisors is an integer number (403239417).

Almost surely, 2^806478833 is an apocalyptic number.

It is an amenable number.

806478833 is a deficient number, since it is larger than the sum of its proper divisors (1).

806478833 is an equidigital number, since it uses as much as digits as its factorization.

806478833 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 774144, while the sum is 47.

The square root of 806478833 is about 28398.5709675681. The cubic root of 806478833 is about 930.8170385726.

The spelling of 806478833 in words is "eight hundred six million, four hundred seventy-eight thousand, eight hundred thirty-three".