646848 has 42 divisors (see below), whose sum is σ = 1855724. Its totient is φ = 215424.

The previous prime is 646843. The next prime is 646859. The reversal of 646848 is 848646.

646848 is a `hidden beast` number, since 646 + 8 + 4 + 8 = 666.

646848 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (646843) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15 + ... + 1137.

2⁶⁴⁶⁸⁴⁸ 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 646848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (927862).

646848 is an abundant number, since it is smaller than the sum of its proper divisors (1208876).

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

646848 is a wasteful number, since it uses less digits than its factorization.

646848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1141 (or 1128 counting only the distinct ones).

The product of its digits is 36864, while the sum is 36.

The square root of 646848 is about 804.2686118456. The cubic root of 646848 is about 86.4836638155.

The spelling of 646848 in words is "six hundred forty-six thousand, eight hundred forty-eight".