8782661 has 2 divisors, whose sum is σ = 8782662. Its totient is φ = 8782660.

The previous prime is 8782649. The next prime is 8782717. The reversal of 8782661 is 1662878.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4452100 + 4330561 = 2110^2 + 2081^2 .

It is a cyclic number.

It is not a de Polignac number, because 8782661 - 2¹⁰ = 8781637 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 (8782601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4391330 + 4391331.

It is an arithmetic number, because the mean of its divisors is an integer number (4391331).

Almost surely, 2^8782661 is an apocalyptic number.

It is an amenable number.

8782661 is a deficient number, since it is larger than the sum of its proper divisors (1).

8782661 is an equidigital number, since it uses as much as digits as its factorization.

8782661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32256, while the sum is 38.

The square root of 8782661 is about 2963.5554659901. Note that the first 3 decimals coincide. The cubic root of 8782661 is about 206.3203376873.

The spelling of 8782661 in words is "eight million, seven hundred eighty-two thousand, six hundred sixty-one".