9660138 has 16 divisors (see below), whose sum is σ = 20160576. Its totient is φ = 3080000.

The previous prime is 9660109. The next prime is 9660139. The reversal of 9660138 is 8310669.

It is an Ulam number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 9660099 and 9660108.

It is not an unprimeable number, because it can be changed into a prime (9660139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34863 + ... + 35138.

It is an arithmetic number, because the mean of its divisors is an integer number (1260036).

Almost surely, 2^9660138 is an apocalyptic number.

9660138 is an abundant number, since it is smaller than the sum of its proper divisors (10500438).

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

9660138 is a wasteful number, since it uses less digits than its factorization.

9660138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70029.

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

The square root of 9660138 is about 3108.0762538908. The cubic root of 9660138 is about 212.9745831384.

The spelling of 9660138 in words is "nine million, six hundred sixty thousand, one hundred thirty-eight".