9678578 has 48 divisors (see below), whose sum is σ = 18615744. Its totient is φ = 3739680.

The previous prime is 9678577. The next prime is 9678589. The reversal of 9678578 is 8758769.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9678577) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 90401 + ... + 90507.

It is an arithmetic number, because the mean of its divisors is an integer number (387828).

Almost surely, 2^9678578 is an apocalyptic number.

9678578 is a gapful number since it is divisible by the number (98) formed by its first and last digit.

9678578 is a deficient number, since it is larger than the sum of its proper divisors (8937166).

9678578 is a wasteful number, since it uses less digits than its factorization.

9678578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207 (or 200 counting only the distinct ones).

The product of its digits is 846720, while the sum is 50.

The square root of 9678578 is about 3111.0413047724. The cubic root of 9678578 is about 213.1100109857.

The spelling of 9678578 in words is "nine million, six hundred seventy-eight thousand, five hundred seventy-eight".