649287882 has 12 divisors (see below), whose sum is σ = 1406790450. Its totient is φ = 216429288.

The previous prime is 649287811. The next prime is 649287887. The reversal of 649287882 is 288782946.

649287882 is a `hidden beast` number, since 6 + 492 + 8 + 78 + 82 = 666.

649287882 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 502611561 + 146676321 = 22419^2 + 12111^2 .

It is not an unprimeable number, because it can be changed into a prime (649287887) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18035757 + ... + 18035792.

Almost surely, 2^649287882 is an apocalyptic number.

649287882 is an abundant number, since it is smaller than the sum of its proper divisors (757502568).

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

649287882 is a wasteful number, since it uses less digits than its factorization.

649287882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36071557 (or 36071554 counting only the distinct ones).

The product of its digits is 3096576, while the sum is 54.

The square root of 649287882 is about 25481.1279577651. The cubic root of 649287882 is about 865.9226489981.

The spelling of 649287882 in words is "six hundred forty-nine million, two hundred eighty-seven thousand, eight hundred eighty-two".