9642813 has 4 divisors (see below), whose sum is σ = 12857088. Its totient is φ = 6428540.

The previous prime is 9642811. The next prime is 9642817. The reversal of 9642813 is 3182469.

9642813 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 a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 9642813 - 2¹ = 9642811 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9642811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1607133 + ... + 1607138.

It is an arithmetic number, because the mean of its divisors is an integer number (3214272).

Almost surely, 2^9642813 is an apocalyptic number.

It is an amenable number.

9642813 is a deficient number, since it is larger than the sum of its proper divisors (3214275).

9642813 is a wasteful number, since it uses less digits than its factorization.

9642813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3214274.

The product of its digits is 10368, while the sum is 33.

The square root of 9642813 is about 3105.2879093572. The cubic root of 9642813 is about 212.8471870055.

The spelling of 9642813 in words is "nine million, six hundred forty-two thousand, eight hundred thirteen".