244651661 has 2 divisors, whose sum is σ = 244651662. Its totient is φ = 244651660.

The previous prime is 244651601. The next prime is 244651669. The reversal of 244651661 is 166156442.

244651661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 239785225 + 4866436 = 15485^2 + 2206^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-244651661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (244651669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122325830 + 122325831.

It is an arithmetic number, because the mean of its divisors is an integer number (122325831).

Almost surely, 2^244651661 is an apocalyptic number.

It is an amenable number.

244651661 is a deficient number, since it is larger than the sum of its proper divisors (1).

244651661 is an equidigital number, since it uses as much as digits as its factorization.

244651661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34560, while the sum is 35.

The square root of 244651661 is about 15641.3446033261. The cubic root of 244651661 is about 625.4357801358.

The spelling of 244651661 in words is "two hundred forty-four million, six hundred fifty-one thousand, six hundred sixty-one".