544878613 has 4 divisors (see below), whose sum is σ = 559605100. Its totient is φ = 530152128.

The previous prime is 544878601. The next prime is 544878623. The reversal of 544878613 is 316878445.

It is a happy number.

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 243578449 + 301300164 = 15607^2 + 17358^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-544878613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (544878623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7363188 + ... + 7363261.

It is an arithmetic number, because the mean of its divisors is an integer number (139901275).

Almost surely, 2^544878613 is an apocalyptic number.

It is an amenable number.

544878613 is a deficient number, since it is larger than the sum of its proper divisors (14726487).

544878613 is a wasteful number, since it uses less digits than its factorization.

544878613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14726486.

The product of its digits is 645120, while the sum is 46.

The square root of 544878613 is about 23342.6350911803. The cubic root of 544878613 is about 816.7702687021.

The spelling of 544878613 in words is "five hundred forty-four million, eight hundred seventy-eight thousand, six hundred thirteen".