646845848 has 32 divisors (see below), whose sum is σ = 1355371920. Its totient is φ = 286848000.

The previous prime is 646845847. The next prime is 646845883. The reversal of 646845848 is 848548646.

It is a self number, because there is not a number n which added to its sum of digits gives 646845848.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646845847) 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 7 ways as a sum of consecutive naturals, for example, 86033 + ... + 93248.

Almost surely, 2^646845848 is an apocalyptic number.

It is an amenable number.

646845848 is an abundant number, since it is smaller than the sum of its proper divisors (708526072).

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

646845848 is a wasteful number, since it uses less digits than its factorization.

646845848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179339 (or 179335 counting only the distinct ones).

The product of its digits is 5898240, while the sum is 53.

The square root of 646845848 is about 25433.1643332087. The cubic root of 646845848 is about 864.8356790787.

The spelling of 646845848 in words is "six hundred forty-six million, eight hundred forty-five thousand, eight hundred forty-eight".