8805661 has 2 divisors, whose sum is σ = 8805662. Its totient is φ = 8805660.

The previous prime is 8805653. The next prime is 8805707. The reversal of 8805661 is 1665088.

It is a happy number.

8805661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8468100 + 337561 = 2910^2 + 581^2 .

It is a cyclic number.

It is not a de Polignac number, because 8805661 - 2³ = 8805653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8805631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4402830 + 4402831.

It is an arithmetic number, because the mean of its divisors is an integer number (4402831).

Almost surely, 2^8805661 is an apocalyptic number.

It is an amenable number.

8805661 is a deficient number, since it is larger than the sum of its proper divisors (1).

8805661 is an equidigital number, since it uses as much as digits as its factorization.

8805661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 8805661 is about 2967.4334027910. The cubic root of 8805661 is about 206.5002843420.

The spelling of 8805661 in words is "eight million, eight hundred five thousand, six hundred sixty-one".