2108647 has 2 divisors, whose sum is σ = 2108648. Its totient is φ = 2108646.

The previous prime is 2108641. The next prime is 2108653. The reversal of 2108647 is 7468012.

It is a balanced prime because it is at equal distance from previous prime (2108641) and next prime (2108653).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2108647 is a prime.

2108647 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2108641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1054323 + 1054324.

It is an arithmetic number, because the mean of its divisors is an integer number (1054324).

2^2108647 is an apocalyptic number.

2108647 is a deficient number, since it is larger than the sum of its proper divisors (1).

2108647 is an equidigital number, since it uses as much as digits as its factorization.

2108647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 2108647 is about 1452.1181081441. The cubic root of 2108647 is about 128.2334403773.

The spelling of 2108647 in words is "two million, one hundred eight thousand, six hundred forty-seven".