9561980 has 12 divisors (see below), whose sum is σ = 20080200. Its totient is φ = 3824784.

The previous prime is 9561961. The next prime is 9561983. The reversal of 9561980 is 891659.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9561983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239030 + ... + 239069.

It is an arithmetic number, because the mean of its divisors is an integer number (1673350).

Almost surely, 2^9561980 is an apocalyptic number.

It is an amenable number.

9561980 is an abundant number, since it is smaller than the sum of its proper divisors (10518220).

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

9561980 is a wasteful number, since it uses less digits than its factorization.

9561980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478108 (or 478106 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 38.

The square root of 9561980 is about 3092.2451390535. The cubic root of 9561980 is about 212.2507712457.

The spelling of 9561980 in words is "nine million, five hundred sixty-one thousand, nine hundred eighty".