4644660689 has 2 divisors, whose sum is σ = 4644660690. Its totient is φ = 4644660688.

The previous prime is 4644660673. The next prime is 4644660703. The reversal of 4644660689 is 9860664464.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3353336464 + 1291324225 = 57908^2 + 35935^2 .

It is a cyclic number.

It is not a de Polignac number, because 4644660689 - 2⁴ = 4644660673 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4644660689.

It is not a weakly prime, because it can be changed into another prime (4644660659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2322330344 + 2322330345.

It is an arithmetic number, because the mean of its divisors is an integer number (2322330345).

Almost surely, 2^4644660689 is an apocalyptic number.

It is an amenable number.

4644660689 is a deficient number, since it is larger than the sum of its proper divisors (1).

4644660689 is an equidigital number, since it uses as much as digits as its factorization.

4644660689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5971968, while the sum is 53.

The square root of 4644660689 is about 68151.7475124446. The cubic root of 4644660689 is about 1668.4684452456.

The spelling of 4644660689 in words is "four billion, six hundred forty-four million, six hundred sixty thousand, six hundred eighty-nine".