8648661 has 8 divisors (see below), whose sum is σ = 13178944. Its totient is φ = 4942080.

The previous prime is 8648557. The next prime is 8648677. The reversal of 8648661 is 1668468.

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

It is not a de Polignac number, because 8648661 - 2⁷ = 8648533 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 (8644661) 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, 205900 + ... + 205941.

It is an arithmetic number, because the mean of its divisors is an integer number (1647368).

Almost surely, 2^8648661 is an apocalyptic number.

It is an amenable number.

8648661 is a deficient number, since it is larger than the sum of its proper divisors (4530283).

8648661 is a wasteful number, since it uses less digits than its factorization.

8648661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411851.

The product of its digits is 55296, while the sum is 39.

The square root of 8648661 is about 2940.8605883312. The cubic root of 8648661 is about 205.2656559888.

The spelling of 8648661 in words is "eight million, six hundred forty-eight thousand, six hundred sixty-one".