6255661 has 2 divisors, whose sum is σ = 6255662. Its totient is φ = 6255660.

The previous prime is 6255649. The next prime is 6255671. The reversal of 6255661 is 1665526.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5808100 + 447561 = 2410^2 + 669^2 .

It is a cyclic number.

It is not a de Polignac number, because 6255661 - 2⁵ = 6255629 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6255631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3127830 + 3127831.

It is an arithmetic number, because the mean of its divisors is an integer number (3127831).

Almost surely, 2^6255661 is an apocalyptic number.

It is an amenable number.

6255661 is a deficient number, since it is larger than the sum of its proper divisors (1).

6255661 is an equidigital number, since it uses as much as digits as its factorization.

6255661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10800, while the sum is 31.

The square root of 6255661 is about 2501.1319437407. The cubic root of 6255661 is about 184.2571722889.

The spelling of 6255661 in words is "six million, two hundred fifty-five thousand, six hundred sixty-one".