6648378 has 16 divisors (see below), whose sum is σ = 14505696. Its totient is φ = 2014640.

The previous prime is 6648371. The next prime is 6648401. The reversal of 6648378 is 8738466.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6648371) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50301 + ... + 50432.

It is an arithmetic number, because the mean of its divisors is an integer number (906606).

Almost surely, 2^6648378 is an apocalyptic number.

6648378 is an abundant number, since it is smaller than the sum of its proper divisors (7857318).

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

6648378 is a wasteful number, since it uses less digits than its factorization.

6648378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100749.

The product of its digits is 193536, while the sum is 42.

The square root of 6648378 is about 2578.4448801555. Note that the first 3 decimals coincide. The cubic root of 6648378 is about 188.0349452167.

The spelling of 6648378 in words is "six million, six hundred forty-eight thousand, three hundred seventy-eight".