9138660 has 24 divisors (see below), whose sum is σ = 25588416. Its totient is φ = 2436960.

The previous prime is 9138637. The next prime is 9138697. The reversal of 9138660 is 668319.

9138660 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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, 76096 + ... + 76215.

It is an arithmetic number, because the mean of its divisors is an integer number (1066184).

Almost surely, 2^9138660 is an apocalyptic number.

It is an amenable number.

9138660 is an abundant number, since it is smaller than the sum of its proper divisors (16449756).

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

9138660 is a wasteful number, since it uses less digits than its factorization.

9138660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152323 (or 152321 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 9138660 is about 3023.0216671403. The cubic root of 9138660 is about 209.0711813890.

The spelling of 9138660 in words is "nine million, one hundred thirty-eight thousand, six hundred sixty".