648179712 has 104 divisors (see below), whose sum is σ = 1920625680. Its totient is φ = 216023040.

The previous prime is 648179687. The next prime is 648179761. The reversal of 648179712 is 217971846.

It is a happy number.

It is a congruent number.

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, 107662 + ... + 113522.

Almost surely, 2^648179712 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 648179712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (960312840).

648179712 is an abundant number, since it is smaller than the sum of its proper divisors (1272445968).

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

648179712 is an equidigital number, since it uses as much as digits as its factorization.

648179712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5894 (or 5866 counting only the distinct ones).

The product of its digits is 169344, while the sum is 45.

The square root of 648179712 is about 25459.3737550632. The cubic root of 648179712 is about 865.4297315665.

It can be divided in two parts, 64817 and 9712, that added together give a square (74529 = 273²).

The spelling of 648179712 in words is "six hundred forty-eight million, one hundred seventy-nine thousand, seven hundred twelve".