3805644 has 24 divisors (see below), whose sum is σ = 8968960. Its totient is φ = 1255824.

The previous prime is 3805639. The next prime is 3805663. The reversal of 3805644 is 4465083.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 304 + ... + 2775.

Almost surely, 2^3805644 is an apocalyptic number.

It is an amenable number.

3805644 is an abundant number, since it is smaller than the sum of its proper divisors (5163316).

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

3805644 is a wasteful number, since it uses less digits than its factorization.

3805644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3189 (or 3187 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 3805644 is about 1950.8059872781. The cubic root of 3805644 is about 156.1262948335.

The spelling of 3805644 in words is "three million, eight hundred five thousand, six hundred forty-four".