544040645 has 8 divisors (see below), whose sum is σ = 653050104. Its totient is φ = 435098304.

The previous prime is 544040633. The next prime is 544040657. The reversal of 544040645 is 546040445.

It is an interprime number because it is at equal distance from previous prime (544040633) and next prime (544040657).

It can be written as a sum of positive squares in 4 ways, for example, as 34093921 + 509946724 = 5839^2 + 22582^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 544040645 - 2¹⁰ = 544039621 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 3227 + ... + 33143.

It is an arithmetic number, because the mean of its divisors is an integer number (81631263).

Almost surely, 2^544040645 is an apocalyptic number.

It is an amenable number.

544040645 is a deficient number, since it is larger than the sum of its proper divisors (109009459).

544040645 is a wasteful number, since it uses less digits than its factorization.

544040645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33559.

The product of its (nonzero) digits is 38400, while the sum is 32.

The square root of 544040645 is about 23324.6788831058. The cubic root of 544040645 is about 816.3513506212.

The spelling of 544040645 in words is "five hundred forty-four million, forty thousand, six hundred forty-five".