649448212 has 48 divisors (see below), whose sum is σ = 1397910528. Its totient is φ = 257656320.

The previous prime is 649448207. The next prime is 649448213. The reversal of 649448212 is 212844946.

649448212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649448213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17853 + ... + 40219.

It is an arithmetic number, because the mean of its divisors is an integer number (29123136).

Almost surely, 2^649448212 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 649448212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (698955264).

649448212 is an abundant number, since it is smaller than the sum of its proper divisors (748462316).

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

649448212 is a wasteful number, since it uses less digits than its factorization.

649448212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22456 (or 22454 counting only the distinct ones).

The product of its digits is 110592, while the sum is 40.

The square root of 649448212 is about 25484.2738173957. The cubic root of 649448212 is about 865.9939178227.

The spelling of 649448212 in words is "six hundred forty-nine million, four hundred forty-eight thousand, two hundred twelve".