7688394863 has 4 divisors (see below), whose sum is σ = 7691269560. Its totient is φ = 7685520168.

The previous prime is 7688394841. The next prime is 7688394869. The reversal of 7688394863 is 3684938867.

7688394863 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7688394863 - 2¹⁸ = 7688132719 is a prime.

It is a super-2 number, since 2×7688394863² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7688394796 and 7688394805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7688394869) by changing a digit.

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, 1433333 + ... + 1438686.

It is an arithmetic number, because the mean of its divisors is an integer number (1922817390).

Almost surely, 2^7688394863 is an apocalyptic number.

7688394863 is a deficient number, since it is larger than the sum of its proper divisors (2874697).

7688394863 is a wasteful number, since it uses less digits than its factorization.

7688394863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2874696.

The product of its digits is 41803776, while the sum is 62.

The square root of 7688394863 is about 87683.4925342279. The cubic root of 7688394863 is about 1973.6882696564.

The spelling of 7688394863 in words is "seven billion, six hundred eighty-eight million, three hundred ninety-four thousand, eight hundred sixty-three".