7668228667 has 4 divisors (see below), whose sum is σ = 8365340376. Its totient is φ = 6971116960.

The previous prime is 7668228619. The next prime is 7668228683.

7668228667 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7668228667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7668228067) 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, 348555838 + ... + 348555859.

It is an arithmetic number, because the mean of its divisors is an integer number (2091335094).

Almost surely, 2^7668228667 is an apocalyptic number.

7668228667 is a deficient number, since it is larger than the sum of its proper divisors (697111709).

7668228667 is a wasteful number, since it uses less digits than its factorization.

7668228667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 697111708.

The product of its digits is 16257024, while the sum is 58.

The square root of 7668228667 is about 87568.4227732806. The cubic root of 7668228667 is about 1971.9611369574.

The spelling of 7668228667 in words is "seven billion, six hundred sixty-eight million, two hundred twenty-eight thousand, six hundred sixty-seven".