6208661 has 2 divisors, whose sum is σ = 6208662. Its totient is φ = 6208660.

The previous prime is 6208651. The next prime is 6208663. The reversal of 6208661 is 1668026.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3352561 + 2856100 = 1831^2 + 1690^2 .

It is a cyclic number.

It is not a de Polignac number, because 6208661 - 2²² = 2014357 is a prime.

It is a Sophie Germain prime.

Together with 6208663, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6208663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3104330 + 3104331.

It is an arithmetic number, because the mean of its divisors is an integer number (3104331).

Almost surely, 2^6208661 is an apocalyptic number.

It is an amenable number.

6208661 is a deficient number, since it is larger than the sum of its proper divisors (1).

6208661 is an equidigital number, since it uses as much as digits as its factorization.

6208661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 6208661 is about 2491.7184832962. The cubic root of 6208661 is about 183.7945584321.

The spelling of 6208661 in words is "six million, two hundred eight thousand, six hundred sixty-one".