244693661 has 2 divisors, whose sum is σ = 244693662. Its totient is φ = 244693660.

The previous prime is 244693651. The next prime is 244693679. The reversal of 244693661 is 166396442.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 190964761 + 53728900 = 13819^2 + 7330^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-244693661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (244693601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122346830 + 122346831.

It is an arithmetic number, because the mean of its divisors is an integer number (122346831).

Almost surely, 2^244693661 is an apocalyptic number.

It is an amenable number.

244693661 is a deficient number, since it is larger than the sum of its proper divisors (1).

244693661 is an equidigital number, since it uses as much as digits as its factorization.

244693661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 186624, while the sum is 41.

The square root of 244693661 is about 15642.6871412811. The cubic root of 244693661 is about 625.4715681614.

The spelling of 244693661 in words is "two hundred forty-four million, six hundred ninety-three thousand, six hundred sixty-one".