9621980 has 24 divisors (see below), whose sum is σ = 21270480. Its totient is φ = 3646080.

The previous prime is 9621979. The next prime is 9622001. The reversal of 9621980 is 891269.

9621980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 9621980.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12281 + ... + 13040.

It is an arithmetic number, because the mean of its divisors is an integer number (886270).

Almost surely, 2^9621980 is an apocalyptic number.

It is an amenable number.

9621980 is an abundant number, since it is smaller than the sum of its proper divisors (11648500).

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

9621980 is a wasteful number, since it uses less digits than its factorization.

9621980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25349 (or 25347 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 9621980 is about 3101.9316562426. The cubic root of 9621980 is about 212.6937932246.

It can be divided in two parts, 9621 and 980, that added together give a palindrome (10601).

The spelling of 9621980 in words is "nine million, six hundred twenty-one thousand, nine hundred eighty".