2108206663 has 2 divisors, whose sum is σ = 2108206664. Its totient is φ = 2108206662.

The previous prime is 2108206613. The next prime is 2108206673. The reversal of 2108206663 is 3666028012.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2108206663 - 2²⁵ = 2074652231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2108206603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1054103331 + 1054103332.

It is an arithmetic number, because the mean of its divisors is an integer number (1054103332).

Almost surely, 2^2108206663 is an apocalyptic number.

2108206663 is a deficient number, since it is larger than the sum of its proper divisors (1).

2108206663 is an equidigital number, since it uses as much as digits as its factorization.

2108206663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 2108206663 is about 45915.2116732570. The cubic root of 2108206663 is about 1282.2451366437.

The spelling of 2108206663 in words is "two billion, one hundred eight million, two hundred six thousand, six hundred sixty-three".