9657940 has 12 divisors (see below), whose sum is σ = 20281716. Its totient is φ = 3863168.

The previous prime is 9657937. The next prime is 9657943. The reversal of 9657940 is 497569.

9657940 is digitally balanced in base 2, because in such base 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 (9657937) and next prime (9657943).

It can be written as a sum of positive squares in 2 ways, for example, as 5673924 + 3984016 = 2382^2 + 1996^2 .

It is a junction number, because it is equal to n+sod(n) for n = 9657893 and 9657902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9657943) 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, 241429 + ... + 241468.

It is an arithmetic number, because the mean of its divisors is an integer number (1690143).

Almost surely, 2^9657940 is an apocalyptic number.

It is an amenable number.

9657940 is an abundant number, since it is smaller than the sum of its proper divisors (10623776).

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

9657940 is a wasteful number, since it uses less digits than its factorization.

9657940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482906 (or 482904 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 9657940 is about 3107.7226388467. The cubic root of 9657940 is about 212.9584289991.

The spelling of 9657940 in words is "nine million, six hundred fifty-seven thousand, nine hundred forty".