7768722668 has 24 divisors (see below), whose sum is σ = 15542970912. Its totient is φ = 3328268544.

The previous prime is 7768722617. The next prime is 7768722761. The reversal of 7768722668 is 8662278677.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33230 + ... + 129002.

It is an arithmetic number, because the mean of its divisors is an integer number (647623788).

Almost surely, 2^7768722668 is an apocalyptic number.

It is an amenable number.

7768722668 is an abundant number, since it is smaller than the sum of its proper divisors (7774248244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7768722668 is a wasteful number, since it uses less digits than its factorization.

7768722668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98681 (or 98679 counting only the distinct ones).

The product of its digits is 18966528, while the sum is 59.

The square root of 7768722668 is about 88140.3577710007. The cubic root of 7768722668 is about 1980.5381209208.

The spelling of 7768722668 in words is "seven billion, seven hundred sixty-eight million, seven hundred twenty-two thousand, six hundred sixty-eight".