9645642 has 48 divisors (see below), whose sum is σ = 22014720. Its totient is φ = 3164832.

The previous prime is 9645637. The next prime is 9645653. The reversal of 9645642 is 2465469.

9645642 is a `hidden beast` number, since 9 + 6 + 4 + 5 + 642 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 9645597 and 9645606.

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 in 23 ways as a sum of consecutive naturals, for example, 43143 + ... + 43365.

It is an arithmetic number, because the mean of its divisors is an integer number (458640).

Almost surely, 2^9645642 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9645642, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11007360).

9645642 is an abundant number, since it is smaller than the sum of its proper divisors (12369078).

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

9645642 is a wasteful number, since it uses less digits than its factorization.

9645642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329 (or 317 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 9645642 is about 3105.7433892709. The cubic root of 9645642 is about 212.8679999438.

The spelling of 9645642 in words is "nine million, six hundred forty-five thousand, six hundred forty-two".