8671985 has 8 divisors (see below), whose sum is σ = 11893056. Its totient is φ = 5946480.

The previous prime is 8671981. The next prime is 8671987. The reversal of 8671985 is 5891768.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8671985 - 2² = 8671981 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8671981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123851 + ... + 123920.

It is an arithmetic number, because the mean of its divisors is an integer number (1486632).

Almost surely, 2^8671985 is an apocalyptic number.

It is an amenable number.

8671985 is a deficient number, since it is larger than the sum of its proper divisors (3221071).

8671985 is a wasteful number, since it uses less digits than its factorization.

8671985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247783.

The product of its digits is 120960, while the sum is 44.

The square root of 8671985 is about 2944.8234242480. The cubic root of 8671985 is about 205.4500128041.

The spelling of 8671985 in words is "eight million, six hundred seventy-one thousand, nine hundred eighty-five".