9999632 has 10 divisors (see below), whose sum is σ = 19374318. Its totient is φ = 4999808.

The previous prime is 9999601. The next prime is 9999637. The reversal of 9999632 is 2369999.

It can be written as a sum of positive squares in only one way, i.e., 9634816 + 364816 = 3104^2 + 604^2 .

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (9999637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312473 + ... + 312504.

Almost surely, 2^9999632 is an apocalyptic number.

It is an amenable number.

9999632 is a deficient number, since it is larger than the sum of its proper divisors (9374686).

9999632 is a wasteful number, since it uses less digits than its factorization.

9999632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624985 (or 624979 counting only the distinct ones).

The product of its digits is 236196, while the sum is 47.

The square root of 9999632 is about 3162.2194737241. The cubic root of 9999632 is about 215.4408261975.

The spelling of 9999632 in words is "nine million, nine hundred ninety-nine thousand, six hundred thirty-two".