649736930 has 16 divisors (see below), whose sum is σ = 1194410880. Its totient is φ = 254364912.

The previous prime is 649736921. The next prime is 649736933. The reversal of 649736930 is 39637946.

649736930 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is not an unprimeable number, because it can be changed into a prime (649736933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 690740 + ... + 691679.

It is an arithmetic number, because the mean of its divisors is an integer number (74650680).

Almost surely, 2^649736930 is an apocalyptic number.

649736930 is a deficient number, since it is larger than the sum of its proper divisors (544673950).

649736930 is a wasteful number, since it uses less digits than its factorization.

649736930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1382473.

The product of its (nonzero) digits is 734832, while the sum is 47.

The square root of 649736930 is about 25489.9378186766. The cubic root of 649736930 is about 866.1222272530.

The spelling of 649736930 in words is "six hundred forty-nine million, seven hundred thirty-six thousand, nine hundred thirty".