65244871 has 2 divisors, whose sum is σ = 65244872. Its totient is φ = 65244870.

The previous prime is 65244833. The next prime is 65244887. The reversal of 65244871 is 17844256.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65244871 - 2⁹ = 65244359 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 65244871.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65242871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32622435 + 32622436.

It is an arithmetic number, because the mean of its divisors is an integer number (32622436).

Almost surely, 2^65244871 is an apocalyptic number.

65244871 is a deficient number, since it is larger than the sum of its proper divisors (1).

65244871 is an equidigital number, since it uses as much as digits as its factorization.

65244871 is an evil number, because the sum of its binary digits is even.

The product of its digits is 53760, while the sum is 37.

The square root of 65244871 is about 8077.4297273328. The cubic root of 65244871 is about 402.5768452740.

The spelling of 65244871 in words is "sixty-five million, two hundred forty-four thousand, eight hundred seventy-one".