649953248 has 144 divisors (see below), whose sum is σ = 1621121040. Its totient is φ = 254693376.

The previous prime is 649953247. The next prime is 649953277. The reversal of 649953248 is 842359946.

It is a junction number, because it is equal to n+sod(n) for n = 649953196 and 649953205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649953247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 985943 + ... + 986601.

It is an arithmetic number, because the mean of its divisors is an integer number (11257785).

Almost surely, 2^649953248 is an apocalyptic number.

649953248 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 649953248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (810560520).

649953248 is an abundant number, since it is smaller than the sum of its proper divisors (971167792).

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

649953248 is a wasteful number, since it uses less digits than its factorization.

649953248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 737 (or 722 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 50.

The square root of 649953248 is about 25494.1806693214. The cubic root of 649953248 is about 866.2183364272.

The spelling of 649953248 in words is "six hundred forty-nine million, nine hundred fifty-three thousand, two hundred forty-eight".