3688668667 has 2 divisors, whose sum is σ = 3688668668. Its totient is φ = 3688668666.

The previous prime is 3688668661. The next prime is 3688668679. The reversal of 3688668667 is 7668668863.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3688668667 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3688668599 and 3688668608.

It is not a weakly prime, because it can be changed into another prime (3688668661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1844334333 + 1844334334.

It is an arithmetic number, because the mean of its divisors is an integer number (1844334334).

Almost surely, 2^3688668667 is an apocalyptic number.

3688668667 is a deficient number, since it is larger than the sum of its proper divisors (1).

3688668667 is an equidigital number, since it uses as much as digits as its factorization.

3688668667 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 83607552, while the sum is 64.

The square root of 3688668667 is about 60734.4108969536. The cubic root of 3688668667 is about 1545.0998447569.

The spelling of 3688668667 in words is "three billion, six hundred eighty-eight million, six hundred sixty-eight thousand, six hundred sixty-seven".