7698564388 has 12 divisors (see below), whose sum is σ = 13473337500. Its totient is φ = 3849039392.

The previous prime is 7698564337. The next prime is 7698564407. The reversal of 7698564388 is 8834658967.

It can be written as a sum of positive squares in 2 ways, for example, as 4804985124 + 2893579264 = 69318^2 + 53792^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23670 + ... + 126322.

It is an arithmetic number, because the mean of its divisors is an integer number (1122778125).

Almost surely, 2^7698564388 is an apocalyptic number.

It is an amenable number.

7698564388 is a deficient number, since it is larger than the sum of its proper divisors (5774773112).

7698564388 is a wasteful number, since it uses less digits than its factorization.

7698564388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121406 (or 121404 counting only the distinct ones).

The product of its digits is 69672960, while the sum is 64.

The square root of 7698564388 is about 87741.4633340475. The cubic root of 7698564388 is about 1974.5580927022.

The spelling of 7698564388 in words is "seven billion, six hundred ninety-eight million, five hundred sixty-four thousand, three hundred eighty-eight".