8710661 has 4 divisors (see below), whose sum is σ = 8731212. Its totient is φ = 8690112.

The previous prime is 8710649. The next prime is 8710679. The reversal of 8710661 is 1660178.

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 1366561 + 7344100 = 1169^2 + 2710^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8710661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8710621) 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, 9626 + ... + 10491.

It is an arithmetic number, because the mean of its divisors is an integer number (2182803).

Almost surely, 2^8710661 is an apocalyptic number.

It is an amenable number.

8710661 is a deficient number, since it is larger than the sum of its proper divisors (20551).

8710661 is a wasteful number, since it uses less digits than its factorization.

8710661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20550.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 8710661 is about 2951.3828962031. The cubic root of 8710661 is about 205.7549872388.

The spelling of 8710661 in words is "eight million, seven hundred ten thousand, six hundred sixty-one".