9901646 has 12 divisors (see below), whose sum is σ = 15019872. Its totient is φ = 4895544.

The previous prime is 9901637. The next prime is 9901649. The reversal of 9901646 is 6461099.

9901646 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9901649) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 44291 + ... + 44513.

It is an arithmetic number, because the mean of its divisors is an integer number (1251656).

Almost surely, 2^9901646 is an apocalyptic number.

9901646 is a deficient number, since it is larger than the sum of its proper divisors (5118226).

9901646 is a wasteful number, since it uses less digits than its factorization.

9901646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523 (or 374 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 9901646 is about 3146.6881002095. The cubic root of 9901646 is about 214.7348163745.

The spelling of 9901646 in words is "nine million, nine hundred one thousand, six hundred forty-six".