7686666798 has 16 divisors (see below), whose sum is σ = 15748293456. Its totient is φ = 2499728960.

The previous prime is 7686666763. The next prime is 7686666817. The reversal of 7686666798 is 8976666867.

It is a happy number.

It is a congruent 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, 15623061 + ... + 15623552.

It is an arithmetic number, because the mean of its divisors is an integer number (984268341).

Almost surely, 2^7686666798 is an apocalyptic number.

7686666798 is an abundant number, since it is smaller than the sum of its proper divisors (8061626658).

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

7686666798 is a wasteful number, since it uses less digits than its factorization.

7686666798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31246659.

The product of its digits is 219469824, while the sum is 69.

The square root of 7686666798 is about 87673.6379877099. The cubic root of 7686666798 is about 1973.5403880226.

Adding to 7686666798 its sum of digits (69), we get a palindrome (7686666867).

The spelling of 7686666798 in words is "seven billion, six hundred eighty-six million, six hundred sixty-six thousand, seven hundred ninety-eight".