65707273 has 2 divisors, whose sum is σ = 65707274. Its totient is φ = 65707272.

The previous prime is 65707231. The next prime is 65707283. The reversal of 65707273 is 37270756.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34257609 + 31449664 = 5853^2 + 5608^2 .

It is a cyclic number.

It is not a de Polignac number, because 65707273 - 2⁹ = 65706761 is a prime.

It is not a weakly prime, because it can be changed into another prime (65707283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32853636 + 32853637.

It is an arithmetic number, because the mean of its divisors is an integer number (32853637).

Almost surely, 2^65707273 is an apocalyptic number.

It is an amenable number.

65707273 is a deficient number, since it is larger than the sum of its proper divisors (1).

65707273 is an equidigital number, since it uses as much as digits as its factorization.

65707273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 61740, while the sum is 37.

The square root of 65707273 is about 8106.0022822597. The cubic root of 65707273 is about 403.5256518955.

Subtracting from 65707273 its sum of digits (37), we obtain a square (65707236 = 8106²).

The spelling of 65707273 in words is "sixty-five million, seven hundred seven thousand, two hundred seventy-three".