4011644 has 48 divisors (see below), whose sum is σ = 8805888. Its totient is φ = 1556928.

The previous prime is 4011583. The next prime is 4011647. The reversal of 4011644 is 4461104.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4011647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37439 + ... + 37545.

It is an arithmetic number, because the mean of its divisors is an integer number (183456).

Almost surely, 2^4011644 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 4011644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4402944).

4011644 is an abundant number, since it is smaller than the sum of its proper divisors (4794244).

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

4011644 is a wasteful number, since it uses less digits than its factorization.

4011644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234 (or 232 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 4011644 is about 2002.9088845976. The cubic root of 4011644 is about 158.8939867922.

Adding to 4011644 its reverse (4461104), we get a palindrome (8472748).

The spelling of 4011644 in words is "four million, eleven thousand, six hundred forty-four".