3108689 has 2 divisors, whose sum is σ = 3108690. Its totient is φ = 3108688.

The previous prime is 3108613. The next prime is 3108691. The reversal of 3108689 is 9868013.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2739025 + 369664 = 1655^2 + 608^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3108689 is a prime.

Together with 3108691, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3105689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1554344 + 1554345.

It is an arithmetic number, because the mean of its divisors is an integer number (1554345).

Almost surely, 2^3108689 is an apocalyptic number.

It is an amenable number.

3108689 is a deficient number, since it is larger than the sum of its proper divisors (1).

3108689 is an equidigital number, since it uses as much as digits as its factorization.

3108689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 3108689 is about 1763.1474697257. The cubic root of 3108689 is about 145.9460769154.

It can be divided in two parts, 3108 and 689, that multiplied together give a palindrome (2141412).

The spelling of 3108689 in words is "three million, one hundred eight thousand, six hundred eighty-nine".