8770561 has 2 divisors, whose sum is σ = 8770562. Its totient is φ = 8770560.

The previous prime is 8770547. The next prime is 8770607. The reversal of 8770561 is 1650778.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8520561 + 250000 = 2919^2 + 500^2 .

It is a cyclic number.

It is not a de Polignac number, because 8770561 - 2²¹ = 6673409 is a prime.

It is not a weakly prime, because it can be changed into another prime (8770661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4385280 + 4385281.

It is an arithmetic number, because the mean of its divisors is an integer number (4385281).

Almost surely, 2^8770561 is an apocalyptic number.

It is an amenable number.

8770561 is a deficient number, since it is larger than the sum of its proper divisors (1).

8770561 is an equidigital number, since it uses as much as digits as its factorization.

8770561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11760, while the sum is 34.

The square root of 8770561 is about 2961.5132955974. The cubic root of 8770561 is about 206.2255439628.

The spelling of 8770561 in words is "eight million, seven hundred seventy thousand, five hundred sixty-one".