9942660 has 144 divisors (see below), whose sum is σ = 37180416. Its totient is φ = 2094336.

The previous prime is 9942659. The next prime is 9942683. The reversal of 9942660 is 662499.

9942660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16077 + ... + 16683.

Almost surely, 2^9942660 is an apocalyptic number.

9942660 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9942660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18590208).

9942660 is an abundant number, since it is smaller than the sum of its proper divisors (27237756).

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

9942660 is a wasteful number, since it uses less digits than its factorization.

9942660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642 (or 637 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 9942660 is about 3153.1983762523. The cubic root of 9942660 is about 215.0308951456.

The spelling of 9942660 in words is "nine million, nine hundred forty-two thousand, six hundred sixty".