8708649 has 4 divisors (see below), whose sum is σ = 11611536. Its totient is φ = 5805764.

The previous prime is 8708639. The next prime is 8708657. The reversal of 8708649 is 9468078.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8708649 - 2⁵ = 8708617 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8708649.

It is not an unprimeable number, because it can be changed into a prime (8708639) 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, 1451439 + ... + 1451444.

It is an arithmetic number, because the mean of its divisors is an integer number (2902884).

Almost surely, 2^8708649 is an apocalyptic number.

It is an amenable number.

8708649 is a deficient number, since it is larger than the sum of its proper divisors (2902887).

8708649 is a wasteful number, since it uses less digits than its factorization.

8708649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2902886.

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 8708649 is about 2951.0420193552. The cubic root of 8708649 is about 205.7391441659.

The spelling of 8708649 in words is "eight million, seven hundred eight thousand, six hundred forty-nine".