3688668671 has 4 divisors (see below), whose sum is σ = 3694953192. Its totient is φ = 3682384152.

The previous prime is 3688668667. The next prime is 3688668679. The reversal of 3688668671 is 1768668863.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1768668863 = 13 ⋅136051451.

It is a cyclic number.

It is not a de Polignac number, because 3688668671 - 2² = 3688668667 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3688668671.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3688668679) 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, 3141380 + ... + 3142553.

It is an arithmetic number, because the mean of its divisors is an integer number (923738298).

Almost surely, 2^3688668671 is an apocalyptic number.

3688668671 is a deficient number, since it is larger than the sum of its proper divisors (6284521).

3688668671 is an equidigital number, since it uses as much as digits as its factorization.

3688668671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6284520.

The product of its digits is 13934592, while the sum is 59.

The square root of 3688668671 is about 60734.4109298839. The cubic root of 3688668671 is about 1545.0998453154.

The spelling of 3688668671 in words is "three billion, six hundred eighty-eight million, six hundred sixty-eight thousand, six hundred seventy-one".