744663660667 has 2 divisors, whose sum is σ = 744663660668. Its totient is φ = 744663660666.

The previous prime is 744663660649. The next prime is 744663660709. The reversal of 744663660667 is 766066366447.

It is a weak prime.

It is an emirp because it is prime and its reverse (766066366447) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 744663660667 - 2¹⁹ = 744663136379 is a prime.

It is not a weakly prime, because it can be changed into another prime (744663661667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372331830333 + 372331830334.

It is an arithmetic number, because the mean of its divisors is an integer number (372331830334).

Almost surely, 2^744663660667 is an apocalyptic number.

744663660667 is a deficient number, since it is larger than the sum of its proper divisors (1).

744663660667 is an equidigital number, since it uses as much as digits as its factorization.

744663660667 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 109734912, while the sum is 61.

The spelling of 744663660667 in words is "seven hundred forty-four billion, six hundred sixty-three million, six hundred sixty thousand, six hundred sixty-seven".