7688868 has 48 divisors (see below), whose sum is σ = 20213760. Its totient is φ = 2253600.

The previous prime is 7688861. The next prime is 7688881. The reversal of 7688868 is 8688867.

It is a super-2 number, since 2×7688868² = 118237382242848, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7688868.

It is not an unprimeable number, because it can be changed into a prime (7688861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3153 + ... + 5031.

It is an arithmetic number, because the mean of its divisors is an integer number (421120).

Almost surely, 2^7688868 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7688868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10106880).

7688868 is an abundant number, since it is smaller than the sum of its proper divisors (12524892).

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

7688868 is a wasteful number, since it uses less digits than its factorization.

7688868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1928 (or 1926 counting only the distinct ones).

The product of its digits is 1032192, while the sum is 51.

The square root of 7688868 is about 2772.8808124404. The cubic root of 7688868 is about 197.3728755168.

Subtracting 7688868 from its reverse (8688867), we obtain a palindrome (999999).

The spelling of 7688868 in words is "seven million, six hundred eighty-eight thousand, eight hundred sixty-eight".