8671605 has 16 divisors (see below), whose sum is σ = 13911360. Its totient is φ = 4612608.

The previous prime is 8671589. The next prime is 8671631. The reversal of 8671605 is 5061768.

It is not a de Polignac number, because 8671605 - 2⁴ = 8671589 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9666 + ... + 10524.

It is an arithmetic number, because the mean of its divisors is an integer number (869460).

Almost surely, 2^8671605 is an apocalyptic number.

It is an amenable number.

8671605 is a deficient number, since it is larger than the sum of its proper divisors (5239755).

8671605 is a wasteful number, since it uses less digits than its factorization.

8671605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1540.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 8671605 is about 2944.7589035437. The cubic root of 8671605 is about 205.4470118708.

The spelling of 8671605 in words is "eight million, six hundred seventy-one thousand, six hundred five".