4644 has 24 divisors (see below), whose sum is σ = 12320. Its totient is φ = 1512.

The previous prime is 4643. The next prime is 4649. The reversal of 4644 is 4464.

4644 = T₃₀ + T₃₁ + ... + T₃₇.

It is a Harshad number since it is a multiple of its sum of digits (18).

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

It is an Ulam number.

It is a d-powerful number, because it can be written as 4⁴ + 4⁴ + 6² + 4⁶ .

Its product of digits (384) is a multiple of the sum of its prime divisors (48).

It is a plaindrome in base 14, base 15 and base 16.

It is a nialpdrome in base 6 and base 9.

It is a zygodrome in base 6.

It is not an unprimeable number, because it can be changed into a prime (4643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87 + ... + 129.

2⁴⁶⁴⁴ 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 4644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6160).

4644 is an abundant number, since it is smaller than the sum of its proper divisors (7676).

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

4644 is a wasteful number, since it uses less digits than its factorization.

4644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56 (or 48 counting only the distinct ones).

The product of its digits is 384, while the sum is 18.

The square root of 4644 is about 68.1469001496. The cubic root of 4644 is about 16.6838932996.

The spelling of 4644 in words is "four thousand, six hundred forty-four".