3641856 has 40 divisors (see below), whose sum is σ = 9706224. Its totient is φ = 1213440.

The previous prime is 3641851. The next prime is 3641857. The reversal of 3641856 is 6581463.

It is not an unprimeable number, because it can be changed into a prime (3641851) 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, 351 + ... + 2721.

Almost surely, 2^3641856 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 3641856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4853112).

3641856 is an abundant number, since it is smaller than the sum of its proper divisors (6064368).

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

3641856 is an equidigital number, since it uses as much as digits as its factorization.

3641856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2392 (or 2376 counting only the distinct ones).

The product of its digits is 17280, while the sum is 33.

The square root of 3641856 is about 1908.3647450108. The cubic root of 3641856 is about 153.8535742062.

The spelling of 3641856 in words is "three million, six hundred forty-one thousand, eight hundred fifty-six".