649683212 has 24 divisors (see below), whose sum is σ = 1176014112. Its totient is φ = 313833600.

The previous prime is 649683197. The next prime is 649683227. The reversal of 649683212 is 212386946.

It is an interprime number because it is at equal distance from previous prime (649683197) and next prime (649683227).

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a self number, because there is not a number n which added to its sum of digits gives 649683212.

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 7 ways as a sum of consecutive naturals, for example, 2339 + ... + 36122.

It is an arithmetic number, because the mean of its divisors is an integer number (49000588).

Almost surely, 2^649683212 is an apocalyptic number.

It is an amenable number.

649683212 is a deficient number, since it is larger than the sum of its proper divisors (526330900).

649683212 is a wasteful number, since it uses less digits than its factorization.

649683212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38609 (or 38607 counting only the distinct ones).

The product of its digits is 124416, while the sum is 41.

The square root of 649683212 is about 25488.8840869898. The cubic root of 649683212 is about 866.0983572661.

The spelling of 649683212 in words is "six hundred forty-nine million, six hundred eighty-three thousand, two hundred twelve".