8680661 has 6 divisors (see below), whose sum is σ = 9541686. Its totient is φ = 7891400.

The previous prime is 8680631. The next prime is 8680669. The reversal of 8680661 is 1660868.

8680661 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 7806436 + 874225 = 2794^2 + 935^2 .

It is a de Polignac number, because none of the positive numbers 2^k-8680661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8680669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 35750 + ... + 35991.

It is an arithmetic number, because the mean of its divisors is an integer number (1590281).

Almost surely, 2^8680661 is an apocalyptic number.

It is an amenable number.

8680661 is a deficient number, since it is larger than the sum of its proper divisors (861025).

8680661 is a wasteful number, since it uses less digits than its factorization.

8680661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71763 (or 71752 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 8680661 is about 2946.2961494052. The cubic root of 8680661 is about 205.5185050123.

The spelling of 8680661 in words is "eight million, six hundred eighty thousand, six hundred sixty-one".