544065761 has 4 divisors (see below), whose sum is σ = 549057300. Its totient is φ = 539074224.

The previous prime is 544065751. The next prime is 544065791. The reversal of 544065761 is 167560445.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 468462736 + 75603025 = 21644^2 + 8695^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-544065761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (544065751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2495606 + ... + 2495823.

It is an arithmetic number, because the mean of its divisors is an integer number (137264325).

Almost surely, 2^544065761 is an apocalyptic number.

It is an amenable number.

544065761 is a deficient number, since it is larger than the sum of its proper divisors (4991539).

544065761 is a wasteful number, since it uses less digits than its factorization.

544065761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4991538.

The product of its (nonzero) digits is 100800, while the sum is 38.

The square root of 544065761 is about 23325.2172765872. The cubic root of 544065761 is about 816.3639128965.

The spelling of 544065761 in words is "five hundred forty-four million, sixty-five thousand, seven hundred sixty-one".