806643433 has 2 divisors, whose sum is σ = 806643434. Its totient is φ = 806643432.

The previous prime is 806643391. The next prime is 806643449. The reversal of 806643433 is 334346608.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 729432064 + 77211369 = 27008^2 + 8787^2 .

It is a cyclic number.

It is not a de Polignac number, because 806643433 - 2¹³ = 806635241 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 806643392 and 806643401.

It is not a weakly prime, because it can be changed into another prime (806643133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 403321716 + 403321717.

It is an arithmetic number, because the mean of its divisors is an integer number (403321717).

Almost surely, 2^806643433 is an apocalyptic number.

It is an amenable number.

806643433 is a deficient number, since it is larger than the sum of its proper divisors (1).

806643433 is an equidigital number, since it uses as much as digits as its factorization.

806643433 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 124416, while the sum is 37.

The square root of 806643433 is about 28401.4688528604. The cubic root of 806643433 is about 930.8803599544.

The spelling of 806643433 in words is "eight hundred six million, six hundred forty-three thousand, four hundred thirty-three".