65868208 has 40 divisors (see below), whose sum is σ = 146935040. Its totient is φ = 28019520.

The previous prime is 65868199. The next prime is 65868221. The reversal of 65868208 is 80286856.

It is a happy number.

65868208 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 7 ways as a sum of consecutive naturals, for example, 13453 + ... + 17683.

It is an arithmetic number, because the mean of its divisors is an integer number (3673376).

Almost surely, 2^65868208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65868208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73467520).

65868208 is an abundant number, since it is smaller than the sum of its proper divisors (81066832).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65868208 is a wasteful number, since it uses less digits than its factorization.

65868208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4385 (or 4379 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 43.

The square root of 65868208 is about 8115.9231144707. The cubic root of 65868208 is about 403.8548313512.

The spelling of 65868208 in words is "sixty-five million, eight hundred sixty-eight thousand, two hundred eight".