9900631 has 8 divisors (see below), whose sum is σ = 10687040. Its totient is φ = 9117792.

The previous prime is 9900623. The next prime is 9900641. The reversal of 9900631 is 1360099.

It is a happy number.

9900631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9900631 - 2³ = 9900623 is a prime.

It is a super-2 number, since 2×9900631² = 196044988396322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 9900631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9900601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9010 + ... + 10048.

It is an arithmetic number, because the mean of its divisors is an integer number (1335880).

Almost surely, 2^9900631 is an apocalyptic number.

9900631 is a deficient number, since it is larger than the sum of its proper divisors (786409).

9900631 is a wasteful number, since it uses less digits than its factorization.

9900631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1785.

The product of its (nonzero) digits is 1458, while the sum is 28.

The square root of 9900631 is about 3146.5268153950. The cubic root of 9900631 is about 214.7274787632.

The spelling of 9900631 in words is "nine million, nine hundred thousand, six hundred thirty-one".