9980644 has 12 divisors (see below), whose sum is σ = 17872624. Its totient is φ = 4874184.

The previous prime is 9980629. The next prime is 9980693. The reversal of 9980644 is 4460899.

It is a super-2 number, since 2×9980644² = 199226509309472, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 9980597 and 9980606.

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, 28842 + ... + 29185.

Almost surely, 2^9980644 is an apocalyptic number.

It is an amenable number.

9980644 is a deficient number, since it is larger than the sum of its proper divisors (7891980).

9980644 is a wasteful number, since it uses less digits than its factorization.

9980644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58074 (or 58072 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 9980644 is about 3159.2157254610. The cubic root of 9980644 is about 215.3043750950.

The spelling of 9980644 in words is "nine million, nine hundred eighty thousand, six hundred forty-four".