646314404 has 12 divisors (see below), whose sum is σ = 1135225728. Its totient is φ = 321964200.

The previous prime is 646314401. The next prime is 646314451. The reversal of 646314404 is 404413646.

646314404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (646314401) 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, 297032 + ... + 299199.

It is an arithmetic number, because the mean of its divisors is an integer number (94602144).

Almost surely, 2^646314404 is an apocalyptic number.

It is an amenable number.

646314404 is a deficient number, since it is larger than the sum of its proper divisors (488911324).

646314404 is a wasteful number, since it uses less digits than its factorization.

646314404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 596506 (or 596504 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

The square root of 646314404 is about 25422.7143318726. The cubic root of 646314404 is about 864.5987665475.

The spelling of 646314404 in words is "six hundred forty-six million, three hundred fourteen thousand, four hundred four".