244378661 has 2 divisors, whose sum is σ = 244378662. Its totient is φ = 244378660.

The previous prime is 244378639. The next prime is 244378733. The reversal of 244378661 is 166873442.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 198274561 + 46104100 = 14081^2 + 6790^2 .

It is a cyclic number.

It is not a de Polignac number, because 244378661 - 2⁶ = 244378597 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (244308661) 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 as a sum of consecutive naturals, namely, 122189330 + 122189331.

It is an arithmetic number, because the mean of its divisors is an integer number (122189331).

Almost surely, 2^244378661 is an apocalyptic number.

It is an amenable number.

244378661 is a deficient number, since it is larger than the sum of its proper divisors (1).

244378661 is an equidigital number, since it uses as much as digits as its factorization.

244378661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 193536, while the sum is 41.

The square root of 244378661 is about 15632.6152962324. The cubic root of 244378661 is about 625.2030580741.

The spelling of 244378661 in words is "two hundred forty-four million, three hundred seventy-eight thousand, six hundred sixty-one".