4768608661 has 2 divisors, whose sum is σ = 4768608662. Its totient is φ = 4768608660.

The previous prime is 4768608659. The next prime is 4768608679. The reversal of 4768608661 is 1668068674.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4720514436 + 48094225 = 68706^2 + 6935^2 .

It is a cyclic number.

It is not a de Polignac number, because 4768608661 - 2¹ = 4768608659 is a prime.

Together with 4768608659, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 4768608599 and 4768608608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4768608631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2384304330 + 2384304331.

It is an arithmetic number, because the mean of its divisors is an integer number (2384304331).

Almost surely, 2^4768608661 is an apocalyptic number.

It is an amenable number.

4768608661 is a deficient number, since it is larger than the sum of its proper divisors (1).

4768608661 is an equidigital number, since it uses as much as digits as its factorization.

4768608661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2322432, while the sum is 52.

The square root of 4768608661 is about 69055.1132140119. The cubic root of 4768608661 is about 1683.1799960404.

The spelling of 4768608661 in words is "four billion, seven hundred sixty-eight million, six hundred eight thousand, six hundred sixty-one".