9978600 has 48 divisors (see below), whose sum is σ = 30935520. Its totient is φ = 2660800.

The previous prime is 9978599. The next prime is 9978601. The reversal of 9978600 is 68799.

It is an interprime number because it is at equal distance from previous prime (9978599) and next prime (9978601).

It is not an unprimeable number, because it can be changed into a prime (9978601) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7716 + ... + 8915.

It is an arithmetic number, because the mean of its divisors is an integer number (644490).

Almost surely, 2^9978600 is an apocalyptic number.

It is an amenable number.

9978600 is an abundant number, since it is smaller than the sum of its proper divisors (20956920).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9978600 is a wasteful number, since it uses less digits than its factorization.

9978600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16650 (or 16641 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 9978600 is about 3158.8922108866. The cubic root of 9978600 is about 215.2896762376.

The spelling of 9978600 in words is "nine million, nine hundred seventy-eight thousand, six hundred".