64991296 has 28 divisors (see below), whose sum is σ = 129365248. Its totient is φ = 32395392.

The previous prime is 64991287. The next prime is 64991321. The reversal of 64991296 is 69219946.

64991296 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 3 ways as a sum of consecutive naturals, for example, 22105 + ... + 24871.

Almost surely, 2^64991296 is an apocalyptic number.

It is an amenable number.

64991296 is a deficient number, since it is larger than the sum of its proper divisors (64373952).

64991296 is a wasteful number, since it uses less digits than its factorization.

64991296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3146 (or 3136 counting only the distinct ones).

The product of its digits is 209952, while the sum is 46.

The square root of 64991296 is about 8061.7179310616. The cubic root of 64991296 is about 402.0546281875.

The spelling of 64991296 in words is "sixty-four million, nine hundred ninety-one thousand, two hundred ninety-six".