649470632 has 16 divisors (see below), whose sum is σ = 1219696800. Its totient is φ = 324218160.

The previous prime is 649470589. The next prime is 649470683. The reversal of 649470632 is 236074946.

It is a self number, because there is not a number n which added to its sum of digits gives 649470632.

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 3 ways as a sum of consecutive naturals, for example, 59282 + ... + 69377.

It is an arithmetic number, because the mean of its divisors is an integer number (76231050).

Almost surely, 2^649470632 is an apocalyptic number.

It is an amenable number.

649470632 is a deficient number, since it is larger than the sum of its proper divisors (570226168).

649470632 is a wasteful number, since it uses less digits than its factorization.

649470632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129296 (or 129292 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 41.

The square root of 649470632 is about 25484.7136927218. The cubic root of 649470632 is about 866.0038828771.

The spelling of 649470632 in words is "six hundred forty-nine million, four hundred seventy thousand, six hundred thirty-two".