65724959 has 2 divisors, whose sum is σ = 65724960. Its totient is φ = 65724958.

The previous prime is 65724947. The next prime is 65724973. The reversal of 65724959 is 95942756.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65724959 - 2²⁰ = 64676383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65724979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32862479 + 32862480.

It is an arithmetic number, because the mean of its divisors is an integer number (32862480).

Almost surely, 2^65724959 is an apocalyptic number.

65724959 is a deficient number, since it is larger than the sum of its proper divisors (1).

65724959 is an equidigital number, since it uses as much as digits as its factorization.

65724959 is an evil number, because the sum of its binary digits is even.

The product of its digits is 680400, while the sum is 47.

The square root of 65724959 is about 8107.0931288594. The cubic root of 65724959 is about 403.5618534407.

The spelling of 65724959 in words is "sixty-five million, seven hundred twenty-four thousand, nine hundred fifty-nine".