65630459 has 2 divisors, whose sum is σ = 65630460. Its totient is φ = 65630458.

The previous prime is 65630429. The next prime is 65630527. The reversal of 65630459 is 95403656.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65630459 - 2¹⁶ = 65564923 is a prime.

It is not a weakly prime, because it can be changed into another prime (65630429) 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 as a sum of consecutive naturals, namely, 32815229 + 32815230.

It is an arithmetic number, because the mean of its divisors is an integer number (32815230).

Almost surely, 2^65630459 is an apocalyptic number.

65630459 is a deficient number, since it is larger than the sum of its proper divisors (1).

65630459 is an equidigital number, since it uses as much as digits as its factorization.

65630459 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 97200, while the sum is 38.

The square root of 65630459 is about 8101.2628027981. The cubic root of 65630459 is about 403.3683455858.

The spelling of 65630459 in words is "sixty-five million, six hundred thirty thousand, four hundred fifty-nine".