8649659 has 4 divisors (see below), whose sum is σ = 8687016. Its totient is φ = 8612304.

The previous prime is 8649637. The next prime is 8649661. The reversal of 8649659 is 9569468.

8649659 is digitally balanced in base 3, 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 a de Polignac number, because none of the positive numbers 2^k-8649659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8649629) 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, 18329 + ... + 18794.

It is an arithmetic number, because the mean of its divisors is an integer number (2171754).

Almost surely, 2^8649659 is an apocalyptic number.

8649659 is a deficient number, since it is larger than the sum of its proper divisors (37357).

8649659 is a wasteful number, since it uses less digits than its factorization.

8649659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37356.

The product of its digits is 466560, while the sum is 47.

The square root of 8649659 is about 2941.0302616600. The cubic root of 8649659 is about 205.2735511318.

The spelling of 8649659 in words is "eight million, six hundred forty-nine thousand, six hundred fifty-nine".