806820433 has 4 divisors (see below), whose sum is σ = 806913700. Its totient is φ = 806727168.

The previous prime is 806820401. The next prime is 806820439. The reversal of 806820433 is 334028608.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 323568144 + 483252289 = 17988^2 + 21983^2 .

It is a cyclic number.

It is not a de Polignac number, because 806820433 - 2⁵ = 806820401 is a prime.

It is a super-2 number, since 2×806820433² = 1301918422212614978, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (806820439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32160 + ... + 51457.

It is an arithmetic number, because the mean of its divisors is an integer number (201728425).

Almost surely, 2^806820433 is an apocalyptic number.

It is an amenable number.

806820433 is a deficient number, since it is larger than the sum of its proper divisors (93267).

806820433 is an equidigital number, since it uses as much as digits as its factorization.

806820433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93266.

The product of its (nonzero) digits is 27648, while the sum is 34.

The square root of 806820433 is about 28404.5847179641. The cubic root of 806820433 is about 930.9484419872.

The spelling of 806820433 in words is "eight hundred six million, eight hundred twenty thousand, four hundred thirty-three".