9642845 has 4 divisors (see below), whose sum is σ = 11571420. Its totient is φ = 7714272.

The previous prime is 9642839. The next prime is 9642863. The reversal of 9642845 is 5482469.

9642845 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5482469 = 19 ⋅288551.

It can be written as a sum of positive squares in 2 ways, for example, as 7458361 + 2184484 = 2731^2 + 1478^2 .

It is a cyclic number.

It is not a de Polignac number, because 9642845 - 2¹² = 9638749 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9642799 and 9642808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 964280 + ... + 964289.

It is an arithmetic number, because the mean of its divisors is an integer number (2892855).

Almost surely, 2^9642845 is an apocalyptic number.

It is an amenable number.

9642845 is a deficient number, since it is larger than the sum of its proper divisors (1928575).

9642845 is a wasteful number, since it uses less digits than its factorization.

9642845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1928574.

The product of its digits is 69120, while the sum is 38.

The square root of 9642845 is about 3105.2930618542. The cubic root of 9642845 is about 212.8474224521.

The spelling of 9642845 in words is "nine million, six hundred forty-two thousand, eight hundred forty-five".