8678891 has 16 divisors (see below), whose sum is σ = 9997344. Its totient is φ = 7463424.

The previous prime is 8678863. The next prime is 8678893. The reversal of 8678891 is 1988768.

It is a cyclic number.

It is not a de Polignac number, because 8678891 - 2¹⁸ = 8416747 is a prime.

It is a super-4 number, since 4×8678891⁴ (a number of 29 digits) contains 4444 as substring.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8678893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38120 + ... + 38346.

It is an arithmetic number, because the mean of its divisors is an integer number (624834).

Almost surely, 2^8678891 is an apocalyptic number.

8678891 is a deficient number, since it is larger than the sum of its proper divisors (1318453).

8678891 is a wasteful number, since it uses less digits than its factorization.

8678891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430.

The product of its digits is 193536, while the sum is 47.

The square root of 8678891 is about 2945.9957569555. The cubic root of 8678891 is about 205.5045355507.

The spelling of 8678891 in words is "eight million, six hundred seventy-eight thousand, eight hundred ninety-one".