65729768 has 32 divisors (see below), whose sum is σ = 138499200. Its totient is φ = 29016768.

The previous prime is 65729767. The next prime is 65729789. The reversal of 65729768 is 86792756.

It is not an unprimeable number, because it can be changed into a prime (65729761) 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, 11348 + ... + 16131.

It is an arithmetic number, because the mean of its divisors is an integer number (4328100).

Almost surely, 2^65729768 is an apocalyptic number.

It is an amenable number.

65729768 is an abundant number, since it is smaller than the sum of its proper divisors (72769432).

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

65729768 is a wasteful number, since it uses less digits than its factorization.

65729768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27521 (or 27517 counting only the distinct ones).

The product of its digits is 1270080, while the sum is 50.

The square root of 65729768 is about 8107.3897155620. The cubic root of 65729768 is about 403.5716958794.

The spelling of 65729768 in words is "sixty-five million, seven hundred twenty-nine thousand, seven hundred sixty-eight".