9649880 has 64 divisors (see below), whose sum is σ = 24027840. Its totient is φ = 3469312.

The previous prime is 9649877. The next prime is 9649901. The reversal of 9649880 is 889469.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 15332 + ... + 15948.

It is an arithmetic number, because the mean of its divisors is an integer number (375435).

Almost surely, 2^9649880 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 9649880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12013920).

9649880 is an abundant number, since it is smaller than the sum of its proper divisors (14377960).

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

9649880 is a wasteful number, since it uses less digits than its factorization.

9649880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 668 (or 664 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 9649880 is about 3106.4255986584. The cubic root of 9649880 is about 212.8991712746.

The spelling of 9649880 in words is "nine million, six hundred forty-nine thousand, eight hundred eighty".