9685440 has 224 divisors, whose sum is σ = 36576000. Its totient is φ = 2405376.

The previous prime is 9685439. The next prime is 9685441. The reversal of 9685440 is 445869.

It is an interprime number because it is at equal distance from previous prime (9685439) and next prime (9685441).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an Ulam number.

It is a nialpdrome in base 6.

It is a junction number, because it is equal to n+sod(n) for n = 9685395 and 9685404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9685441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 164131 + ... + 164189.

Almost surely, 2^9685440 is an apocalyptic number.

9685440 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 9685440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18288000).

9685440 is an abundant number, since it is smaller than the sum of its proper divisors (26890560).

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

9685440 is a wasteful number, since it uses less digits than its factorization.

9685440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104 (or 88 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 9685440 is about 3112.1439555393. The cubic root of 9685440 is about 213.1603632665.

The spelling of 9685440 in words is "nine million, six hundred eighty-five thousand, four hundred forty".