65368720 has 40 divisors (see below), whose sum is σ = 153706680. Its totient is φ = 25850880.

The previous prime is 65368703. The next prime is 65368753. The reversal of 65368720 is 2786356.

65368720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 3400336 + 61968384 = 1844^2 + 7872^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 65368720.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 2530 + ... + 11710.

It is an arithmetic number, because the mean of its divisors is an integer number (3842667).

Almost surely, 2^65368720 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 65368720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76853340).

65368720 is an abundant number, since it is smaller than the sum of its proper divisors (88337960).

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

65368720 is a wasteful number, since it uses less digits than its factorization.

65368720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9283 (or 9277 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 65368720 is about 8085.0924546353. The cubic root of 65368720 is about 402.8314104967.

The spelling of 65368720 in words is "sixty-five million, three hundred sixty-eight thousand, seven hundred twenty".