649150208 has 72 divisors (see below), whose sum is σ = 1491302400. Its totient is φ = 276249600.

The previous prime is 649150169. The next prime is 649150217. The reversal of 649150208 is 802051946.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 269393 + ... + 271791.

Almost surely, 2^649150208 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 649150208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (745651200).

649150208 is an abundant number, since it is smaller than the sum of its proper divisors (842152192).

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

649150208 is a wasteful number, since it uses less digits than its factorization.

649150208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2573 (or 2559 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 649150208 is about 25478.4263250304. The cubic root of 649150208 is about 865.8614417047.

The spelling of 649150208 in words is "six hundred forty-nine million, one hundred fifty thousand, two hundred eight".