8651 has 4 divisors (see below), whose sum is σ = 8904. Its totient is φ = 8400.

The previous prime is 8647. The next prime is 8663. The reversal of 8651 is 1568.

8651 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 8651 - 2² = 8647 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10 and base 11.

It is not an unprimeable number, because it can be changed into a prime (8641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65 + ... + 146.

It is an arithmetic number, because the mean of its divisors is an integer number (2226).

8651 is a deficient number, since it is larger than the sum of its proper divisors (253).

8651 is a wasteful number, since it uses less digits than its factorization.

8651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252.

The product of its digits is 240, while the sum is 20.

The square root of 8651 is about 93.0107520666. The cubic root of 8651 is about 20.5284158780.

The spelling of 8651 in words is "eight thousand, six hundred fifty-one".