8670891 has 8 divisors (see below), whose sum is σ = 11576320. Its totient is φ = 5773032.

The previous prime is 8670887. The next prime is 8670919. The reversal of 8670891 is 1980768.

8670891 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 8670891 - 2² = 8670887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8670811) 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 7 ways as a sum of consecutive naturals, for example, 1830 + ... + 4548.

It is an arithmetic number, because the mean of its divisors is an integer number (1447040).

Almost surely, 2^8670891 is an apocalyptic number.

8670891 is a deficient number, since it is larger than the sum of its proper divisors (2905429).

8670891 is a wasteful number, since it uses less digits than its factorization.

8670891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3785.

The product of its (nonzero) digits is 24192, while the sum is 39.

The square root of 8670891 is about 2944.6376687124. The cubic root of 8670891 is about 205.4413730380.

The spelling of 8670891 in words is "eight million, six hundred seventy thousand, eight hundred ninety-one".