7868688 has 40 divisors (see below), whose sum is σ = 21525408. Its totient is φ = 2468352.

The previous prime is 7868687. The next prime is 7868689. The reversal of 7868688 is 8868687.

It is an interprime number because it is at equal distance from previous prime (7868687) and next prime (7868689).

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 7868688.

It is not an unprimeable number, because it can be changed into a prime (7868687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4006 + ... + 5637.

Almost surely, 2^7868688 is an apocalyptic number.

It is an amenable number.

7868688 is an abundant number, since it is smaller than the sum of its proper divisors (13656720).

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

7868688 is a wasteful number, since it uses less digits than its factorization.

7868688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9671 (or 9665 counting only the distinct ones).

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

The square root of 7868688 is about 2805.1181793286. The cubic root of 7868688 is about 198.8996910353.

Subtracting 7868688 from its reverse (8868687), we obtain a palindrome (999999).

The spelling of 7868688 in words is "seven million, eight hundred sixty-eight thousand, six hundred eighty-eight".