65683685 has 4 divisors (see below), whose sum is σ = 78820428. Its totient is φ = 52546944.

The previous prime is 65683679. The next prime is 65683729. The reversal of 65683685 is 58638656.

65683685 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.

It can be written as a sum of positive squares in 2 ways, for example, as 18335524 + 47348161 = 4282^2 + 6881^2 .

It is a cyclic number.

It is not a de Polignac number, because 65683685 - 2⁴ = 65683669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 6568364 + ... + 6568373.

It is an arithmetic number, because the mean of its divisors is an integer number (19705107).

Almost surely, 2^65683685 is an apocalyptic number.

It is an amenable number.

65683685 is a deficient number, since it is larger than the sum of its proper divisors (13136743).

65683685 is a wasteful number, since it uses less digits than its factorization.

65683685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13136742.

The product of its digits is 1036800, while the sum is 47.

The square root of 65683685 is about 8104.5471804414. The cubic root of 65683685 is about 403.4773594115.

The spelling of 65683685 in words is "sixty-five million, six hundred eighty-three thousand, six hundred eighty-five".