9900624 has 20 divisors (see below), whose sum is σ = 25576736. Its totient is φ = 3300192.

The previous prime is 9900623. The next prime is 9900641. The reversal of 9900624 is 4260099.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 9900591 and 9900600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9900623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103084 + ... + 103179.

Almost surely, 2^9900624 is an apocalyptic number.

It is an amenable number.

9900624 is an abundant number, since it is smaller than the sum of its proper divisors (15676112).

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

9900624 is a wasteful number, since it uses less digits than its factorization.

9900624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206274 (or 206268 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 9900624 is about 3146.5257030573. The cubic root of 9900624 is about 214.7274281573.

The spelling of 9900624 in words is "nine million, nine hundred thousand, six hundred twenty-four".