544364666 has 4 divisors (see below), whose sum is σ = 816547002. Its totient is φ = 272182332.

The previous prime is 544364663. The next prime is 544364677. The reversal of 544364666 is 666463445.

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 only one way, i.e., 515517025 + 28847641 = 22705^2 + 5371^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (544364663) 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 as a sum of consecutive naturals, namely, 136091165 + ... + 136091168.

Almost surely, 2^544364666 is an apocalyptic number.

544364666 is a deficient number, since it is larger than the sum of its proper divisors (272182336).

544364666 is a wasteful number, since it uses less digits than its factorization.

544364666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272182335.

The product of its digits is 1244160, while the sum is 44.

The square root of 544364666 is about 23331.6237326081. The cubic root of 544364666 is about 816.5133866059.

The spelling of 544364666 in words is "five hundred forty-four million, three hundred sixty-four thousand, six hundred sixty-six".