810646404 has 48 divisors (see below), whose sum is σ = 1955659776. Its totient is φ = 261079200.

The previous prime is 810646391. The next prime is 810646409. The reversal of 810646404 is 404646018.

It is not an unprimeable number, because it can be changed into a prime (810646409) 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 15 ways as a sum of consecutive naturals, for example, 300349 + ... + 303035.

It is an arithmetic number, because the mean of its divisors is an integer number (40742912).

Almost surely, 2^810646404 is an apocalyptic number.

It is an amenable number.

810646404 is an abundant number, since it is smaller than the sum of its proper divisors (1145013372).

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

810646404 is a wasteful number, since it uses less digits than its factorization.

810646404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3536 (or 3534 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 810646404 is about 28471.8528374955. The cubic root of 810646404 is about 932.4176522145.

The spelling of 810646404 in words is "eight hundred ten million, six hundred forty-six thousand, four hundred four".