544661 has 4 divisors (see below), whose sum is σ = 586572. Its totient is φ = 502752.

The previous prime is 544651. The next prime is 544667. The reversal of 544661 is 166445.

It is a happy number.

544661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 166445 = 5 ⋅33289.

It can be written as a sum of positive squares in 2 ways, for example, as 220900 + 323761 = 470^2 + 569^2 .

It is a cyclic number.

It is not a de Polignac number, because 544661 - 2¹⁰ = 543637 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 544661.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 544661.

It is not an unprimeable number, because it can be changed into a prime (544667) 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, 20936 + ... + 20961.

It is an arithmetic number, because the mean of its divisors is an integer number (146643).

2⁵⁴⁴⁶⁶¹ is an apocalyptic number.

It is an amenable number.

544661 is a deficient number, since it is larger than the sum of its proper divisors (41911).

544661 is a wasteful number, since it uses less digits than its factorization.

544661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41910.

The product of its digits is 2880, while the sum is 26.

The square root of 544661 is about 738.0115175253. The cubic root of 544661 is about 81.6661520630. Note that the first 3 decimals are identical.

The spelling of 544661 in words is "five hundred forty-four thousand, six hundred sixty-one".