649206032 has 20 divisors (see below), whose sum is σ = 1262627520. Its totient is φ = 323366688.

The previous prime is 649206031. The next prime is 649206043. The reversal of 649206032 is 230602946.

It is a self number, because there is not a number n which added to its sum of digits gives 649206032.

It is not an unprimeable number, because it can be changed into a prime (649206031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72932 + ... + 81347.

It is an arithmetic number, because the mean of its divisors is an integer number (63131376).

Almost surely, 2^649206032 is an apocalyptic number.

It is an amenable number.

649206032 is a deficient number, since it is larger than the sum of its proper divisors (613421488).

649206032 is a wasteful number, since it uses less digits than its factorization.

649206032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154550 (or 154544 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 649206032 is about 25479.5218165491. The cubic root of 649206032 is about 865.8862610572.

Adding to 649206032 its reverse (230602946), we get a palindrome (879808978).

The spelling of 649206032 in words is "six hundred forty-nine million, two hundred six thousand, thirty-two".