649604412 has 36 divisors (see below), whose sum is σ = 1686438936. Its totient is φ = 210682080.

The previous prime is 649604401. The next prime is 649604413. The reversal of 649604412 is 214406946.

649604412 is a `hidden beast` number, since 6 + 4 + 9 + 604 + 41 + 2 = 666.

649604412 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649604413) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 242514 + ... + 245177.

It is an arithmetic number, because the mean of its divisors is an integer number (46845526).

Almost surely, 2^649604412 is an apocalyptic number.

It is an amenable number.

649604412 is an abundant number, since it is smaller than the sum of its proper divisors (1036834524).

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

649604412 is a wasteful number, since it uses less digits than its factorization.

649604412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487738 (or 487733 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 649604412 is about 25487.3382682461. The cubic root of 649604412 is about 866.0633395278.

The spelling of 649604412 in words is "six hundred forty-nine million, six hundred four thousand, four hundred twelve".