7668668 has 12 divisors (see below), whose sum is σ = 15337392. Its totient is φ = 3286560.

The previous prime is 7668667. The next prime is 7668671. The reversal of 7668668 is 8668667.

7668668 is digitally balanced in base 8, because in such base it contains all the possibile digits an equal number of times.

7668668 is an admirable number.

7668668 is strictly pandigital in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7668667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136913 + ... + 136968.

It is an arithmetic number, because the mean of its divisors is an integer number (1278116).

Almost surely, 2^7668668 is an apocalyptic number.

It is an amenable number.

7668668 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

7668668 is a wasteful number, since it uses less digits than its factorization.

7668668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273892 (or 273890 counting only the distinct ones).

The product of its digits is 580608, while the sum is 47.

The square root of 7668668 is about 2769.2359957216. The cubic root of 7668668 is about 197.1998795853.

Subtracting 7668668 from its reverse (8668667), we obtain a palindrome (999999).

The spelling of 7668668 in words is "seven million, six hundred sixty-eight thousand, six hundred sixty-eight".