4781646 has 32 divisors (see below), whose sum is σ = 10780320. Its totient is φ = 1570752.

The previous prime is 4781629. The next prime is 4781653. The reversal of 4781646 is 6461874.

4781646 is a `hidden beast` number, since 4 + 7 + 8 + 1 + 646 = 666.

4781646 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 4781646.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3336 + ... + 4548.

It is an arithmetic number, because the mean of its divisors is an integer number (336885).

Almost surely, 2^4781646 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4781646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5390160).

4781646 is an abundant number, since it is smaller than the sum of its proper divisors (5998674).

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

4781646 is a wasteful number, since it uses less digits than its factorization.

4781646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1297 (or 1291 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 4781646 is about 2186.6975099451. The cubic root of 4781646 is about 168.4712533913.

The spelling of 4781646 in words is "four million, seven hundred eighty-one thousand, six hundred forty-six".