649883480 has 32 divisors (see below), whose sum is σ = 1548253440. Its totient is φ = 244661760.

The previous prime is 649883431. The next prime is 649883501. The reversal of 649883480 is 84388946.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 477176 + ... + 478535.

It is an arithmetic number, because the mean of its divisors is an integer number (48382920).

Almost surely, 2^649883480 is an apocalyptic number.

It is an amenable number.

649883480 is an abundant number, since it is smaller than the sum of its proper divisors (898369960).

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

649883480 is a wasteful number, since it uses less digits than its factorization.

649883480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 955739 (or 955735 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 50.

The square root of 649883480 is about 25492.8123203385. The cubic root of 649883480 is about 866.1873411294.

The spelling of 649883480 in words is "six hundred forty-nine million, eight hundred eighty-three thousand, four hundred eighty".