646504848 has 160 divisors (see below), whose sum is σ = 2079688320. Its totient is φ = 190563840.

The previous prime is 646504847. The next prime is 646504889. The reversal of 646504848 is 848405646.

646504848 is a `hidden beast` number, since 64 + 6 + 504 + 84 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (646504841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 173986 + ... + 177662.

It is an arithmetic number, because the mean of its divisors is an integer number (12998052).

Almost surely, 2^646504848 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 646504848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1039844160).

646504848 is an abundant number, since it is smaller than the sum of its proper divisors (1433183472).

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

646504848 is a wasteful number, since it uses less digits than its factorization.

646504848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3742 (or 3730 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 45.

The square root of 646504848 is about 25426.4596041211. The cubic root of 646504848 is about 864.6836795436.

The spelling of 646504848 in words is "six hundred forty-six million, five hundred four thousand, eight hundred forty-eight".