649547212 has 6 divisors (see below), whose sum is σ = 1136707628. Its totient is φ = 324773604.

The previous prime is 649547189. The next prime is 649547219. The reversal of 649547212 is 212745946.

It is not an unprimeable number, because it can be changed into a prime (649547219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81193398 + ... + 81193405.

Almost surely, 2^649547212 is an apocalyptic number.

It is an amenable number.

649547212 is a deficient number, since it is larger than the sum of its proper divisors (487160416).

649547212 is a wasteful number, since it uses less digits than its factorization.

649547212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162386807 (or 162386805 counting only the distinct ones).

The product of its digits is 120960, while the sum is 40.

The square root of 649547212 is about 25486.2161177371. The cubic root of 649547212 is about 866.0379187865.

The spelling of 649547212 in words is "six hundred forty-nine million, five hundred forty-seven thousand, two hundred twelve".