9965678 has 4 divisors (see below), whose sum is σ = 14948520. Its totient is φ = 4982838.

The previous prime is 9965651. The next prime is 9965687. The reversal of 9965678 is 8765699.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8765699 = 89 ⋅98491.

It is a nialpdrome in base 6.

It is a zygodrome in base 6.

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, 2491418 + ... + 2491421.

It is an arithmetic number, because the mean of its divisors is an integer number (3737130).

Almost surely, 2^9965678 is an apocalyptic number.

9965678 is a deficient number, since it is larger than the sum of its proper divisors (4982842).

9965678 is a wasteful number, since it uses less digits than its factorization.

9965678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4982841.

The product of its digits is 816480, while the sum is 50.

The square root of 9965678 is about 3156.8462110150. The cubic root of 9965678 is about 215.1967047813.

The spelling of 9965678 in words is "nine million, nine hundred sixty-five thousand, six hundred seventy-eight".