65643696 has 50 divisors (see below), whose sum is σ = 189995652. Its totient is φ = 21880800.

The previous prime is 65643673. The next prime is 65643701. The reversal of 65643696 is 69634656.

65643696 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 9 ways as a sum of consecutive naturals, for example, 24030 + ... + 26621.

Almost surely, 2^65643696 is an apocalyptic number.

It is an amenable number.

65643696 is an abundant number, since it is smaller than the sum of its proper divisors (124351956).

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

65643696 is a wasteful number, since it uses less digits than its factorization.

65643696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50671 (or 50656 counting only the distinct ones).

The product of its digits is 699840, while the sum is 45.

The square root of 65643696 is about 8102.0797330068. The cubic root of 65643696 is about 403.3954622018.

The spelling of 65643696 in words is "sixty-five million, six hundred forty-three thousand, six hundred ninety-six".