9780648 has 16 divisors (see below), whose sum is σ = 24451680. Its totient is φ = 3260208.

The previous prime is 9780647. The next prime is 9780721. The reversal of 9780648 is 8460879.

It is a happy number.

9780648 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×9780648² = 191322150599808, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9780647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 203740 + ... + 203787.

It is an arithmetic number, because the mean of its divisors is an integer number (1528230).

Almost surely, 2^9780648 is an apocalyptic number.

It is an amenable number.

9780648 is an abundant number, since it is smaller than the sum of its proper divisors (14671032).

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

9780648 is a wasteful number, since it uses less digits than its factorization.

9780648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407536 (or 407532 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 9780648 is about 3127.4027562820. The cubic root of 9780648 is about 213.8565434443.

The spelling of 9780648 in words is "nine million, seven hundred eighty thousand, six hundred forty-eight".