9675981 has 36 divisors (see below), whose sum is σ = 16725852. Its totient is φ = 5370624.

The previous prime is 9675979. The next prime is 9675983. The reversal of 9675981 is 1895769.

9675981 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (9675979) and next prime (9675983).

It can be written as a sum of positive squares in 2 ways, for example, as 7452900 + 2223081 = 2730^2 + 1491^2 .

It is not a de Polignac number, because 9675981 - 2¹ = 9675979 is a prime.

It is a super-2 number, since 2×9675981² = 187249216624722, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9675983) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 16021 + ... + 16613.

It is an arithmetic number, because the mean of its divisors is an integer number (464607).

Almost surely, 2^9675981 is an apocalyptic number.

It is an amenable number.

9675981 is a deficient number, since it is larger than the sum of its proper divisors (7049871).

9675981 is a wasteful number, since it uses less digits than its factorization.

9675981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650 (or 640 counting only the distinct ones).

The product of its digits is 136080, while the sum is 45.

The square root of 9675981 is about 3110.6238924049. The cubic root of 9675981 is about 213.0909483986.

The spelling of 9675981 in words is "nine million, six hundred seventy-five thousand, nine hundred eighty-one".