9685980 has 72 divisors (see below), whose sum is σ = 30484272. Its totient is φ = 2581632.

The previous prime is 9685979. The next prime is 9685987. The reversal of 9685980 is 895869.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9685987) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3864 + ... + 5856.

Almost surely, 2^9685980 is an apocalyptic number.

9685980 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9685980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15242136).

9685980 is an abundant number, since it is smaller than the sum of its proper divisors (20798292).

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

9685980 is a wasteful number, since it uses less digits than its factorization.

9685980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2017 (or 2003 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The square root of 9685980 is about 3112.2307112423. The cubic root of 9685980 is about 213.1643246923.

The spelling of 9685980 in words is "nine million, six hundred eighty-five thousand, nine hundred eighty".