65687441 has 4 divisors (see below), whose sum is σ = 65704884. Its totient is φ = 65670000.

The previous prime is 65687381. The next prime is 65687443. The reversal of 65687441 is 14478656.

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 45697600 + 19989841 = 6760^2 + 4471^2 .

It is a cyclic number.

It is not a de Polignac number, because 65687441 - 2¹⁰ = 65686417 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (65687443) 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, 470 + ... + 11471.

It is an arithmetic number, because the mean of its divisors is an integer number (16426221).

Almost surely, 2^65687441 is an apocalyptic number.

It is an amenable number.

65687441 is a deficient number, since it is larger than the sum of its proper divisors (17443).

65687441 is a wasteful number, since it uses less digits than its factorization.

65687441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17442.

The product of its digits is 161280, while the sum is 41.

The square root of 65687441 is about 8104.7788988966. The cubic root of 65687441 is about 403.4850499670.

The spelling of 65687441 in words is "sixty-five million, six hundred eighty-seven thousand, four hundred forty-one".