649481480 has 32 divisors (see below), whose sum is σ = 1462282200. Its totient is φ = 259623936.

The previous prime is 649481467. The next prime is 649481501. The reversal of 649481480 is 84184946.

It can be written as a sum of positive squares in 4 ways, for example, as 313785796 + 335695684 = 17714^2 + 18322^2 .

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, 70586 + ... + 79254.

Almost surely, 2^649481480 is an apocalyptic number.

It is an amenable number.

649481480 is an abundant number, since it is smaller than the sum of its proper divisors (812800720).

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

649481480 is a wasteful number, since it uses less digits than its factorization.

649481480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10553 (or 10549 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 44.

The square root of 649481480 is about 25484.9265253012. The cubic root of 649481480 is about 866.0087044232.

The spelling of 649481480 in words is "six hundred forty-nine million, four hundred eighty-one thousand, four hundred eighty".