646085876 has 12 divisors (see below), whose sum is σ = 1154707008. Its totient is φ = 316169592.

The previous prime is 646085873. The next prime is 646085917. The reversal of 646085876 is 678580646.

It is a happy number.

646085876 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646085873) 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, 1718126 + ... + 1718501.

It is an arithmetic number, because the mean of its divisors is an integer number (96225584).

Almost surely, 2^646085876 is an apocalyptic number.

It is an amenable number.

646085876 is a deficient number, since it is larger than the sum of its proper divisors (508621132).

646085876 is a wasteful number, since it uses less digits than its factorization.

646085876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3436678 (or 3436676 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 50.

The square root of 646085876 is about 25418.2193711519. The cubic root of 646085876 is about 864.4968510721.

The spelling of 646085876 in words is "six hundred forty-six million, eighty-five thousand, eight hundred seventy-six".