646314436 has 12 divisors (see below), whose sum is σ = 1152391212. Its totient is φ = 317059808.

The previous prime is 646314401. The next prime is 646314451. The reversal of 646314436 is 634413646.

646314436 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 205062400 + 441252036 = 14320^2 + 21006^2 .

It is a junction number, because it is equal to n+sod(n) for n = 646314395 and 646314404.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1524115 + ... + 1524538.

It is an arithmetic number, because the mean of its divisors is an integer number (96032601).

Almost surely, 2^646314436 is an apocalyptic number.

It is an amenable number.

646314436 is a deficient number, since it is larger than the sum of its proper divisors (506076776).

646314436 is a wasteful number, since it uses less digits than its factorization.

646314436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3048710 (or 3048708 counting only the distinct ones).

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

The square root of 646314436 is about 25422.7149612310. The cubic root of 646314436 is about 864.5987808167.

The spelling of 646314436 in words is "six hundred forty-six million, three hundred fourteen thousand, four hundred thirty-six".