4644660623 has 2 divisors, whose sum is σ = 4644660624. Its totient is φ = 4644660622.

The previous prime is 4644660487. The next prime is 4644660659. The reversal of 4644660623 is 3260664464.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4644660623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4644660673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2322330311 + 2322330312.

It is an arithmetic number, because the mean of its divisors is an integer number (2322330312).

Almost surely, 2^4644660623 is an apocalyptic number.

4644660623 is a deficient number, since it is larger than the sum of its proper divisors (1).

4644660623 is an equidigital number, since it uses as much as digits as its factorization.

4644660623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 497664, while the sum is 41.

The square root of 4644660623 is about 68151.7470282311. The cubic root of 4644660623 is about 1668.4684373427.

The spelling of 4644660623 in words is "four billion, six hundred forty-four million, six hundred sixty thousand, six hundred twenty-three".