7688643436 has 24 divisors (see below), whose sum is σ = 14620175360. Its totient is φ = 3524504400.

The previous prime is 7688643419. The next prime is 7688643439. The reversal of 7688643436 is 6343468867.

It is not an unprimeable number, because it can be changed into a prime (7688643439) 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 7 ways as a sum of consecutive naturals, for example, 1629360 + ... + 1634071.

Almost surely, 2^7688643436 is an apocalyptic number.

7688643436 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

7688643436 is a deficient number, since it is larger than the sum of its proper divisors (6931531924).

7688643436 is a wasteful number, since it uses less digits than its factorization.

7688643436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3263485 (or 3263483 counting only the distinct ones).

The product of its digits is 13934592, while the sum is 55.

The square root of 7688643436 is about 87684.9099674511. The cubic root of 7688643436 is about 1973.7095398234.

The spelling of 7688643436 in words is "seven billion, six hundred eighty-eight million, six hundred forty-three thousand, four hundred thirty-six".