8782675661 has 4 divisors (see below), whose sum is σ = 8881357500. Its totient is φ = 8683993824.

The previous prime is 8782675651. The next prime is 8782675673. The reversal of 8782675661 is 1665762878.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3025660036 + 5757015625 = 55006^2 + 75875^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8782675661 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8782675597 and 8782675606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8782675621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49340786 + ... + 49340963.

It is an arithmetic number, because the mean of its divisors is an integer number (2220339375).

Almost surely, 2^8782675661 is an apocalyptic number.

It is an amenable number.

8782675661 is a deficient number, since it is larger than the sum of its proper divisors (98681839).

8782675661 is an equidigital number, since it uses as much as digits as its factorization.

8782675661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98681838.

The product of its digits is 6773760, while the sum is 56.

The square root of 8782675661 is about 93715.9306681634. The cubic root of 8782675661 is about 2063.2045249157.

The spelling of 8782675661 in words is "eight billion, seven hundred eighty-two million, six hundred seventy-five thousand, six hundred sixty-one".