9981696 has 72 divisors (see below), whose sum is σ = 27299664. Its totient is φ = 3235840.

The previous prime is 9981691. The next prime is 9981731. The reversal of 9981696 is 6961899.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9981691) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31330 + ... + 31646.

It is an arithmetic number, because the mean of its divisors is an integer number (379162).

Almost surely, 2^9981696 is an apocalyptic number.

9981696 is a gapful number since it is divisible by the number (96) 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 9981696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13649832).

9981696 is an abundant number, since it is smaller than the sum of its proper divisors (17317968).

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

9981696 is a wasteful number, since it uses less digits than its factorization.

9981696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377 (or 363 counting only the distinct ones).

The product of its digits is 209952, while the sum is 48.

The square root of 9981696 is about 3159.3822180926. The cubic root of 9981696 is about 215.3119394781.

The spelling of 9981696 in words is "nine million, nine hundred eighty-one thousand, six hundred ninety-six".