9867638 has 16 divisors (see below), whose sum is σ = 16209936. Its totient is φ = 4467840.

The previous prime is 9867623. The next prime is 9867643. The reversal of 9867638 is 8367689.

9867638 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 9867592 and 9867601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6170 + ... + 7602.

It is an arithmetic number, because the mean of its divisors is an integer number (1013121).

Almost surely, 2^9867638 is an apocalyptic number.

9867638 is a deficient number, since it is larger than the sum of its proper divisors (6342298).

9867638 is a wasteful number, since it uses less digits than its factorization.

9867638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1759.

The product of its digits is 435456, while the sum is 47.

The square root of 9867638 is about 3141.2796755463. The cubic root of 9867638 is about 214.4886930465.

The spelling of 9867638 in words is "nine million, eight hundred sixty-seven thousand, six hundred thirty-eight".