646049346 has 16 divisors (see below), whose sum is σ = 1348277184. Its totient is φ = 205986704.

The previous prime is 646049333. The next prime is 646049389. The reversal of 646049346 is 643940646.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 646049298 and 646049307.

It is an unprimeable number.

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, 2340621 + ... + 2340896.

It is an arithmetic number, because the mean of its divisors is an integer number (84267324).

Almost surely, 2^646049346 is an apocalyptic number.

646049346 is an abundant number, since it is smaller than the sum of its proper divisors (702227838).

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

646049346 is a wasteful number, since it uses less digits than its factorization.

646049346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4681545.

The product of its (nonzero) digits is 373248, while the sum is 42.

The square root of 646049346 is about 25417.5007819416. The cubic root of 646049346 is about 864.4805577451.

The spelling of 646049346 in words is "six hundred forty-six million, forty-nine thousand, three hundred forty-six".