9797640 has 32 divisors (see below), whose sum is σ = 29393280. Its totient is φ = 2612672.

The previous prime is 9797603. The next prime is 9797651. The reversal of 9797640 is 467979.

It is a junction number, because it is equal to n+sod(n) for n = 9797592 and 9797601.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40704 + ... + 40943.

It is an arithmetic number, because the mean of its divisors is an integer number (918540).

Almost surely, 2^9797640 is an apocalyptic number.

It is an amenable number.

9797640 is an abundant number, since it is smaller than the sum of its proper divisors (19595640).

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

9797640 is a wasteful number, since it uses less digits than its factorization.

9797640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81661 (or 81657 counting only the distinct ones).

The product of its (nonzero) digits is 95256, while the sum is 42.

The square root of 9797640 is about 3130.1182086305. The cubic root of 9797640 is about 213.9803167036.

The spelling of 9797640 in words is "nine million, seven hundred ninety-seven thousand, six hundred forty".