649940116 has 36 divisors (see below), whose sum is σ = 1344807156. Its totient is φ = 273974400.

The previous prime is 649940099. The next prime is 649940129. The reversal of 649940116 is 611049946.

649940116 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 2 ways, for example, as 163737616 + 486202500 = 12796^2 + 22050^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15225 + ... + 39136.

Almost surely, 2^649940116 is an apocalyptic number.

It is an amenable number.

649940116 is an abundant number, since it is smaller than the sum of its proper divisors (694867040).

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

649940116 is a wasteful number, since it uses less digits than its factorization.

649940116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54440 (or 54431 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 649940116 is about 25493.9231190494. The cubic root of 649940116 is about 866.2125025431.

It can be divided in two parts, 649940 and 116, that added together give a palindrome (650056).

The spelling of 649940116 in words is "six hundred forty-nine million, nine hundred forty thousand, one hundred sixteen".