5644689 has 8 divisors (see below), whose sum is σ = 7593312. Its totient is φ = 3729600.

The previous prime is 5644687. The next prime is 5644693. The reversal of 5644689 is 9864465.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5644689 - 2¹ = 5644687 is a prime.

It is an Ulam number.

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 5644689.

It is not an unprimeable number, because it can be changed into a prime (5644687) 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, 7987 + ... + 8664.

It is an arithmetic number, because the mean of its divisors is an integer number (949164).

Almost surely, 2^5644689 is an apocalyptic number.

It is an amenable number.

5644689 is a deficient number, since it is larger than the sum of its proper divisors (1948623).

5644689 is a wasteful number, since it uses less digits than its factorization.

5644689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16767.

The product of its digits is 207360, while the sum is 42.

The square root of 5644689 is about 2375.8554248944. The cubic root of 5644689 is about 178.0519248421.

It can be divided in two parts, 564 and 4689, that added together give a triangular number (5253 = T₁₀₂).

The spelling of 5644689 in words is "five million, six hundred forty-four thousand, six hundred eighty-nine".