8056661 has 2 divisors, whose sum is σ = 8056662. Its totient is φ = 8056660.

The previous prime is 8056649. The next prime is 8056673. The reversal of 8056661 is 1666508.

It is a balanced prime because it is at equal distance from previous prime (8056649) and next prime (8056673).

It can be written as a sum of positive squares in only one way, i.e., 5317636 + 2739025 = 2306^2 + 1655^2 .

It is a cyclic number.

It is not a de Polignac number, because 8056661 - 2⁶ = 8056597 is a prime.

It is a Sophie Germain prime.

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 (8056681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4028330 + 4028331.

It is an arithmetic number, because the mean of its divisors is an integer number (4028331).

Almost surely, 2^8056661 is an apocalyptic number.

It is an amenable number.

8056661 is a deficient number, since it is larger than the sum of its proper divisors (1).

8056661 is an equidigital number, since it uses as much as digits as its factorization.

8056661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 8056661 is about 2838.4257961060. The cubic root of 8056661 is about 200.4710646195.

The spelling of 8056661 in words is "eight million, fifty-six thousand, six hundred sixty-one".