65717064 has 96 divisors (see below), whose sum is σ = 205583040. Its totient is φ = 18576000.

The previous prime is 65717063. The next prime is 65717077. The reversal of 65717064 is 46071756.

65717064 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (65717063) 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 23 ways as a sum of consecutive naturals, for example, 50259 + ... + 51549.

It is an arithmetic number, because the mean of its divisors is an integer number (2141490).

Almost surely, 2^65717064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65717064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102791520).

65717064 is an abundant number, since it is smaller than the sum of its proper divisors (139865976).

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

65717064 is a wasteful number, since it uses less digits than its factorization.

65717064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1411 (or 1404 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 65717064 is about 8106.6061949499. The cubic root of 65717064 is about 403.5456939357.

The spelling of 65717064 in words is "sixty-five million, seven hundred seventeen thousand, sixty-four".