65719328 has 36 divisors (see below), whose sum is σ = 136577070. Its totient is φ = 31124736.

The previous prime is 65719327. The next prime is 65719361. The reversal of 65719328 is 82391756.

It can be written as a sum of positive squares in only one way, i.e., 39790864 + 25928464 = 6308^2 + 5092^2 .

It is not an unprimeable number, because it can be changed into a prime (65719321) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8708 + ... + 14396.

Almost surely, 2^65719328 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 65719328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68288535).

65719328 is an abundant number, since it is smaller than the sum of its proper divisors (70857742).

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

65719328 is a wasteful number, since it uses less digits than its factorization.

65719328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5737 (or 5710 counting only the distinct ones).

The product of its digits is 90720, while the sum is 41.

The square root of 65719328 is about 8106.7458329468. The cubic root of 65719328 is about 403.5503280287.

The spelling of 65719328 in words is "sixty-five million, seven hundred nineteen thousand, three hundred twenty-eight".