65495609 has 4 divisors (see below), whose sum is σ = 65530404. Its totient is φ = 65460816.

The previous prime is 65495597. The next prime is 65495627. The reversal of 65495609 is 90659456.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 35760400 + 29735209 = 5980^2 + 5453^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65495609 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 65495609.

It is not an unprimeable number, because it can be changed into a prime (65495669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14402 + ... + 18395.

It is an arithmetic number, because the mean of its divisors is an integer number (16382601).

Almost surely, 2^65495609 is an apocalyptic number.

It is an amenable number.

65495609 is a deficient number, since it is larger than the sum of its proper divisors (34795).

65495609 is a wasteful number, since it uses less digits than its factorization.

65495609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34794.

The product of its (nonzero) digits is 291600, while the sum is 44.

The square root of 65495609 is about 8092.9357466867. The cubic root of 65495609 is about 403.0918910292.

The spelling of 65495609 in words is "sixty-five million, four hundred ninety-five thousand, six hundred nine".