649247508 has 192 divisors, whose sum is σ = 2139504640. Its totient is φ = 165628800.

The previous prime is 649247507. The next prime is 649247531. The reversal of 649247508 is 805742946.

It is a happy number.

649247508 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 (649247503) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 303603 + ... + 305733.

Almost surely, 2^649247508 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 649247508, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1069752320).

649247508 is an abundant number, since it is smaller than the sum of its proper divisors (1490257132).

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

649247508 is a wasteful number, since it uses less digits than its factorization.

649247508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2195 (or 2187 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The square root of 649247508 is about 25480.3357120741. The cubic root of 649247508 is about 865.9047003672.

The spelling of 649247508 in words is "six hundred forty-nine million, two hundred forty-seven thousand, five hundred eight".