65637968 has 20 divisors (see below), whose sum is σ = 138735168. Its totient is φ = 29835360.

The previous prime is 65637967. The next prime is 65637983. The reversal of 65637968 is 86973656.

65637968 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65637967) by changing a digit.

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, 186296 + ... + 186647.

Almost surely, 2^65637968 is an apocalyptic number.

It is an amenable number.

65637968 is an abundant number, since it is smaller than the sum of its proper divisors (73097200).

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

65637968 is a wasteful number, since it uses less digits than its factorization.

65637968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372962 (or 372956 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 50.

The square root of 65637968 is about 8101.7262358093. The cubic root of 65637968 is about 403.3837285724.

The spelling of 65637968 in words is "sixty-five million, six hundred thirty-seven thousand, nine hundred sixty-eight".