9657872 has 40 divisors (see below), whose sum is σ = 21802176. Its totient is φ = 4058496.

The previous prime is 9657863. The next prime is 9657881. The reversal of 9657872 is 2787569.

It is an interprime number because it is at equal distance from previous prime (9657863) and next prime (9657881).

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, 5123 + ... + 6749.

Almost surely, 2^9657872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9657872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10901088).

9657872 is an abundant number, since it is smaller than the sum of its proper divisors (12144304).

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

9657872 is a wasteful number, since it uses less digits than its factorization.

9657872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1695 (or 1689 counting only the distinct ones).

The product of its digits is 211680, while the sum is 44.

The square root of 9657872 is about 3107.7116983401. The cubic root of 9657872 is about 212.9579291960.

The spelling of 9657872 in words is "nine million, six hundred fifty-seven thousand, eight hundred seventy-two".