648078 has 8 divisors (see below), whose sum is σ = 1296168. Its totient is φ = 216024.

The previous prime is 648073. The next prime is 648079. The reversal of 648078 is 870846.

It is a sphenic number, since it is the product of 3 distinct primes.

648078 is an admirable number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 648078.

It is not an unprimeable number, because it can be changed into a prime (648073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54001 + ... + 54012.

It is an arithmetic number, because the mean of its divisors is an integer number (162021).

2⁶⁴⁸⁰⁷⁸ is an apocalyptic number.

648078 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

648078 is a wasteful number, since it uses less digits than its factorization.

648078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108018.

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 648078 is about 805.0329185816. The cubic root of 648078 is about 86.5384461614.

It can be divided in two parts, 6 and 48078, that added together give a palindrome (48084).

The spelling of 648078 in words is "six hundred forty-eight thousand, seventy-eight".