544321666 has 16 divisors (see below), whose sum is σ = 948421440. Its totient is φ = 229456080.

The previous prime is 544321577. The next prime is 544321697. The reversal of 544321666 is 666123445.

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, 317836 + ... + 319543.

It is an arithmetic number, because the mean of its divisors is an integer number (59276340).

Almost surely, 2^544321666 is an apocalyptic number.

544321666 is a deficient number, since it is larger than the sum of its proper divisors (404099774).

544321666 is a wasteful number, since it uses less digits than its factorization.

544321666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637449.

The product of its digits is 103680, while the sum is 37.

The square root of 544321666 is about 23330.7022183217. The cubic root of 544321666 is about 816.4918869248.

The spelling of 544321666 in words is "five hundred forty-four million, three hundred twenty-one thousand, six hundred sixty-six".