7688668 has 12 divisors (see below), whose sum is σ = 14490280. Its totient is φ = 3548592.

The previous prime is 7688663. The next prime is 7688671. The reversal of 7688668 is 8668867.

It is a super-2 number, since 2×7688668² = 118231231228448, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7688663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73878 + ... + 73981.

Almost surely, 2^7688668 is an apocalyptic number.

It is an amenable number.

7688668 is a deficient number, since it is larger than the sum of its proper divisors (6801612).

7688668 is a wasteful number, since it uses less digits than its factorization.

7688668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147876 (or 147874 counting only the distinct ones).

The product of its digits is 774144, while the sum is 49.

The square root of 7688668 is about 2772.8447486291. The cubic root of 7688668 is about 197.3711641718.

The spelling of 7688668 in words is "seven million, six hundred eighty-eight thousand, six hundred sixty-eight".