8685947 has 4 divisors (see below), whose sum is σ = 8815656. Its totient is φ = 8556240.

The previous prime is 8685923. The next prime is 8685949. The reversal of 8685947 is 7495868.

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 8685947 - 2¹² = 8681851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8685949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64754 + ... + 64887.

It is an arithmetic number, because the mean of its divisors is an integer number (2203914).

Almost surely, 2^8685947 is an apocalyptic number.

8685947 is a deficient number, since it is larger than the sum of its proper divisors (129709).

8685947 is a wasteful number, since it uses less digits than its factorization.

8685947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129708.

The product of its digits is 483840, while the sum is 47.

The square root of 8685947 is about 2947.1930713816. The cubic root of 8685947 is about 205.5602126802.

The spelling of 8685947 in words is "eight million, six hundred eighty-five thousand, nine hundred forty-seven".