9697878 has 12 divisors (see below), whose sum is σ = 21012108. Its totient is φ = 3232620.

The previous prime is 9697843. The next prime is 9697879. The reversal of 9697878 is 8787969.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9697879) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 269368 + ... + 269403.

It is an arithmetic number, because the mean of its divisors is an integer number (1751009).

Almost surely, 2^9697878 is an apocalyptic number.

9697878 is an abundant number, since it is smaller than the sum of its proper divisors (11314230).

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

9697878 is a wasteful number, since it uses less digits than its factorization.

9697878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538779 (or 538776 counting only the distinct ones).

The product of its digits is 1524096, while the sum is 54.

The square root of 9697878 is about 3114.1416152770. The cubic root of 9697878 is about 213.2515707726.

Subtracting from 9697878 its reverse (8787969), we obtain a palindrome (909909).

The spelling of 9697878 in words is "nine million, six hundred ninety-seven thousand, eight hundred seventy-eight".