7686662545 has 16 divisors (see below), whose sum is σ = 9259038720. Its totient is φ = 6126008704.

The previous prime is 7686662513. The next prime is 7686662549. The reversal of 7686662545 is 5452666867.

7686662545 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 7686662545 - 2⁵ = 7686662513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7686662549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2098926 + ... + 2102584.

It is an arithmetic number, because the mean of its divisors is an integer number (578689920).

Almost surely, 2^7686662545 is an apocalyptic number.

It is an amenable number.

7686662545 is a deficient number, since it is larger than the sum of its proper divisors (1572376175).

7686662545 is a wasteful number, since it uses less digits than its factorization.

7686662545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5144.

The product of its digits is 14515200, while the sum is 55.

The square root of 7686662545 is about 87673.6137329813. The cubic root of 7686662545 is about 1973.5400240387.

The spelling of 7686662545 in words is "seven billion, six hundred eighty-six million, six hundred sixty-two thousand, five hundred forty-five".