244405666 has 8 divisors (see below), whose sum is σ = 369853164. Its totient is φ = 121121280.

The previous prime is 244405663. The next prime is 244405691. The reversal of 244405666 is 666504442.

It can be written as a sum of positive squares in 2 ways, for example, as 196588441 + 47817225 = 14021^2 + 6915^2 .

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

It is not an unprimeable number, because it can be changed into a prime (244405661) 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, 540495 + ... + 540946.

Almost surely, 2^244405666 is an apocalyptic number.

244405666 is a deficient number, since it is larger than the sum of its proper divisors (125447498).

244405666 is a wasteful number, since it uses less digits than its factorization.

244405666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1081556.

The product of its (nonzero) digits is 138240, while the sum is 37.

The square root of 244405666 is about 15633.4790114037. The cubic root of 244405666 is about 625.2260865260.

The spelling of 244405666 in words is "two hundred forty-four million, four hundred five thousand, six hundred sixty-six".