65726253 has 6 divisors (see below), whose sum is σ = 94937934. Its totient is φ = 43817496.

The previous prime is 65726251. The next prime is 65726273. The reversal of 65726253 is 35262756.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 47858724 + 17867529 = 6918^2 + 4227^2 .

It is not a de Polignac number, because 65726253 - 2¹ = 65726251 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65726251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3651450 + ... + 3651467.

It is an arithmetic number, because the mean of its divisors is an integer number (15822989).

Almost surely, 2^65726253 is an apocalyptic number.

It is an amenable number.

65726253 is a deficient number, since it is larger than the sum of its proper divisors (29211681).

65726253 is a wasteful number, since it uses less digits than its factorization.

65726253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7302923 (or 7302920 counting only the distinct ones).

The product of its digits is 75600, while the sum is 36.

The square root of 65726253 is about 8107.1729351236. The cubic root of 65726253 is about 403.5645018796.

The spelling of 65726253 in words is "sixty-five million, seven hundred twenty-six thousand, two hundred fifty-three".