9906636 has 12 divisors (see below), whose sum is σ = 23115512. Its totient is φ = 3302208.

The previous prime is 9906599. The next prime is 9906653. The reversal of 9906636 is 6366099.

9906636 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 a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 9906594 and 9906603.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 412765 + ... + 412788.

Almost surely, 2^9906636 is an apocalyptic number.

It is an amenable number.

9906636 is an abundant number, since it is smaller than the sum of its proper divisors (13208876).

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

9906636 is a wasteful number, since it uses less digits than its factorization.

9906636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 825560 (or 825558 counting only the distinct ones).

The product of its (nonzero) digits is 52488, while the sum is 39.

The square root of 9906636 is about 3147.4808974798. The cubic root of 9906636 is about 214.7708826603.

It can be divided in two parts, 990 and 6636, that added together give a triangular number (7626 = T₁₂₃).

The spelling of 9906636 in words is "nine million, nine hundred six thousand, six hundred thirty-six".