648769212 has 216 divisors, whose sum is σ = 2164016400. Its totient is φ = 161989632.

The previous prime is 648769183. The next prime is 648769223. The reversal of 648769212 is 212967846.

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 71 ways as a sum of consecutive naturals, for example, 434964 + ... + 436452.

Almost surely, 2^648769212 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 648769212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1082008200).

648769212 is an abundant number, since it is smaller than the sum of its proper divisors (1515247188).

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

648769212 is a wasteful number, since it uses less digits than its factorization.

648769212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1545 (or 1533 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 648769212 is about 25470.9483922370. The cubic root of 648769212 is about 865.6920128617.

It can be divided in two parts, 64876 and 9212, that added together give a cube (74088 = 42³).

The spelling of 648769212 in words is "six hundred forty-eight million, seven hundred sixty-nine thousand, two hundred twelve".