649505696 has 48 divisors (see below), whose sum is σ = 1500903936. Its totient is φ = 270832896.

The previous prime is 649505693. The next prime is 649505719. The reversal of 649505696 is 696505946.

649505696 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (649505693) 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, 30896 + ... + 47471.

It is an arithmetic number, because the mean of its divisors is an integer number (31268832).

Almost surely, 2^649505696 is an apocalyptic number.

It is an amenable number.

649505696 is an abundant number, since it is smaller than the sum of its proper divisors (851398240).

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

649505696 is a wasteful number, since it uses less digits than its factorization.

649505696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78421 (or 78413 counting only the distinct ones).

The product of its (nonzero) digits is 1749600, while the sum is 50.

The square root of 649505696 is about 25485.4016252442. The cubic root of 649505696 is about 866.0194673712.

The spelling of 649505696 in words is "six hundred forty-nine million, five hundred five thousand, six hundred ninety-six".