8660661 has 8 divisors (see below), whose sum is σ = 11561760. Its totient is φ = 5766672.

The previous prime is 8660657. The next prime is 8660671. The reversal of 8660661 is 1660668.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8660661 - 2² = 8660657 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8660611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2631 + ... + 4923.

It is an arithmetic number, because the mean of its divisors is an integer number (1445220).

Almost surely, 2^8660661 is an apocalyptic number.

It is an amenable number.

8660661 is a deficient number, since it is larger than the sum of its proper divisors (2901099).

8660661 is a wasteful number, since it uses less digits than its factorization.

8660661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3555.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 8660661 is about 2942.9001002413. The cubic root of 8660661 is about 205.3605473455.

The spelling of 8660661 in words is "eight million, six hundred sixty thousand, six hundred sixty-one".