9906620 has 24 divisors (see below), whose sum is σ = 21117264. Its totient is φ = 3902976.

The previous prime is 9906599. The next prime is 9906653. The reversal of 9906620 is 266099.

It is a super-2 number, since 2×9906620² = 196282239648800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 2357 + ... + 5036.

It is an arithmetic number, because the mean of its divisors is an integer number (879886).

Almost surely, 2^9906620 is an apocalyptic number.

It is an amenable number.

9906620 is an abundant number, since it is smaller than the sum of its proper divisors (11210644).

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

9906620 is a wasteful number, since it uses less digits than its factorization.

9906620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7469 (or 7467 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 9906620 is about 3147.4783557635. The cubic root of 9906620 is about 214.7707670362.

The spelling of 9906620 in words is "nine million, nine hundred six thousand, six hundred twenty".