244666645 has 4 divisors (see below), whose sum is σ = 293599980. Its totient is φ = 195733312.

The previous prime is 244666619. The next prime is 244666651. The reversal of 244666645 is 546666442.

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 54199044 + 190467601 = 7362^2 + 13801^2 .

It is a cyclic number.

It is not a de Polignac number, because 244666645 - 2⁵ = 244666613 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 24466660 + ... + 24466669.

It is an arithmetic number, because the mean of its divisors is an integer number (73399995).

Almost surely, 2^244666645 is an apocalyptic number.

It is an amenable number.

244666645 is a deficient number, since it is larger than the sum of its proper divisors (48933335).

244666645 is an equidigital number, since it uses as much as digits as its factorization.

244666645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48933334.

The product of its digits is 829440, while the sum is 43.

The square root of 244666645 is about 15641.8235829458. The cubic root of 244666645 is about 625.4485484099.

The spelling of 244666645 in words is "two hundred forty-four million, six hundred sixty-six thousand, six hundred forty-five".