8678649 has 16 divisors (see below), whose sum is σ = 13921280. Its totient is φ = 4698000.

The previous prime is 8678639. The next prime is 8678669. The reversal of 8678649 is 9468768.

8678649 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8678649 - 2⁸ = 8678393 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8678598 and 8678607.

It is not an unprimeable number, because it can be changed into a prime (8678639) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10477 + ... + 11274.

It is an arithmetic number, because the mean of its divisors is an integer number (870080).

Almost surely, 2^8678649 is an apocalyptic number.

It is an amenable number.

8678649 is a deficient number, since it is larger than the sum of its proper divisors (5242631).

8678649 is a wasteful number, since it uses less digits than its factorization.

8678649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21780.

The product of its digits is 580608, while the sum is 48.

The square root of 8678649 is about 2945.9546839692. The cubic root of 8678649 is about 205.5026254541.

The spelling of 8678649 in words is "eight million, six hundred seventy-eight thousand, six hundred forty-nine".