8671646 has 4 divisors (see below), whose sum is σ = 13007472. Its totient is φ = 4335822.

The previous prime is 8671639. The next prime is 8671669. The reversal of 8671646 is 6461768.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2167910 + ... + 2167913.

It is an arithmetic number, because the mean of its divisors is an integer number (3251868).

Almost surely, 2^8671646 is an apocalyptic number.

8671646 is a deficient number, since it is larger than the sum of its proper divisors (4335826).

8671646 is a wasteful number, since it uses less digits than its factorization.

8671646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4335825.

The product of its digits is 48384, while the sum is 38.

The square root of 8671646 is about 2944.7658650562. The cubic root of 8671646 is about 205.4473356600.

The spelling of 8671646 in words is "eight million, six hundred seventy-one thousand, six hundred forty-six".