9872678 has 4 divisors (see below), whose sum is σ = 14809020. Its totient is φ = 4936338.

The previous prime is 9872659. The next prime is 9872683. The reversal of 9872678 is 8762789.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8762789 = 7 ⋅1251827.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 2468168 + ... + 2468171.

It is an arithmetic number, because the mean of its divisors is an integer number (3702255).

Almost surely, 2^9872678 is an apocalyptic number.

9872678 is a deficient number, since it is larger than the sum of its proper divisors (4936342).

9872678 is a wasteful number, since it uses less digits than its factorization.

9872678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4936341.

The product of its digits is 338688, while the sum is 47.

The square root of 9872678 is about 3142.0817939704. The cubic root of 9872678 is about 214.5252042838.

The spelling of 9872678 in words is "nine million, eight hundred seventy-two thousand, six hundred seventy-eight".