9860640 has 48 divisors (see below), whose sum is σ = 31062528. Its totient is φ = 2629376.

The previous prime is 9860633. The next prime is 9860651. The reversal of 9860640 is 460689.

It is a tau number, because it is divible by the number of its divisors (48).

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, 9792 + ... + 10751.

It is an arithmetic number, because the mean of its divisors is an integer number (647136).

Almost surely, 2^9860640 is an apocalyptic number.

It is an amenable number.

9860640 is an abundant number, since it is smaller than the sum of its proper divisors (21201888).

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

9860640 is a wasteful number, since it uses less digits than its factorization.

9860640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20561 (or 20553 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 9860640 is about 3140.1656007287. The cubic root of 9860640 is about 214.4379768622.

The spelling of 9860640 in words is "nine million, eight hundred sixty thousand, six hundred forty".