9697640 has 16 divisors (see below), whose sum is σ = 21819780. Its totient is φ = 3879040.

The previous prime is 9697603. The next prime is 9697691. The reversal of 9697640 is 467969.

It can be written as a sum of positive squares in 2 ways, for example, as 9498724 + 198916 = 3082^2 + 446^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121181 + ... + 121260.

Almost surely, 2^9697640 is an apocalyptic number.

It is an amenable number.

9697640 is an abundant number, since it is smaller than the sum of its proper divisors (12122140).

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

9697640 is a wasteful number, since it uses less digits than its factorization.

9697640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242452 (or 242448 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 9697640 is about 3114.1034022652. The cubic root of 9697640 is about 213.2498262573.

The spelling of 9697640 in words is "nine million, six hundred ninety-seven thousand, six hundred forty".