806647404 has 24 divisors (see below), whose sum is σ = 1942893568. Its totient is φ = 260208720.

The previous prime is 806647403. The next prime is 806647423. The reversal of 806647404 is 404746608.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (806647403) 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 in 7 ways as a sum of consecutive naturals, for example, 1083832 + ... + 1084575.

Almost surely, 2^806647404 is an apocalyptic number.

It is an amenable number.

806647404 is an abundant number, since it is smaller than the sum of its proper divisors (1136246164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

806647404 is a wasteful number, since it uses less digits than its factorization.

806647404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2168445 (or 2168443 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 39.

The square root of 806647404 is about 28401.5387611305. The cubic root of 806647404 is about 930.8818874860.

The spelling of 806647404 in words is "eight hundred six million, six hundred forty-seven thousand, four hundred four".