65675609 has 4 divisors (see below), whose sum is σ = 69132240. Its totient is φ = 62218980.

The previous prime is 65675593. The next prime is 65675627. The reversal of 65675609 is 90657656.

65675609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 65675609 - 2⁴ = 65675593 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 65675609.

It is not an unprimeable number, because it can be changed into a prime (65675689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1728287 + ... + 1728324.

It is an arithmetic number, because the mean of its divisors is an integer number (17283060).

Almost surely, 2^65675609 is an apocalyptic number.

It is an amenable number.

65675609 is a deficient number, since it is larger than the sum of its proper divisors (3456631).

65675609 is a wasteful number, since it uses less digits than its factorization.

65675609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3456630.

The product of its (nonzero) digits is 340200, while the sum is 44.

The square root of 65675609 is about 8104.0489263084. The cubic root of 65675609 is about 403.4608224956.

The spelling of 65675609 in words is "sixty-five million, six hundred seventy-five thousand, six hundred nine".