7665668 has 12 divisors (see below), whose sum is σ = 13435212. Its totient is φ = 3827040.

The previous prime is 7665667. The next prime is 7665703. The reversal of 7665668 is 8665667.

It can be written as a sum of positive squares in 2 ways, for example, as 4631104 + 3034564 = 2152^2 + 1742^2 .

It is not an unprimeable number, because it can be changed into a prime (7665667) 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, 3146 + ... + 5022.

It is an arithmetic number, because the mean of its divisors is an integer number (1119601).

Almost surely, 2^7665668 is an apocalyptic number.

It is an amenable number.

7665668 is a deficient number, since it is larger than the sum of its proper divisors (5769544).

7665668 is a wasteful number, since it uses less digits than its factorization.

7665668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2902 (or 2900 counting only the distinct ones).

The product of its digits is 362880, while the sum is 44.

The square root of 7665668 is about 2768.6942770916. The cubic root of 7665668 is about 197.1741612206.

Subtracting 7665668 from its reverse (8665667), we obtain a palindrome (999999).

The spelling of 7665668 in words is "seven million, six hundred sixty-five thousand, six hundred sixty-eight".