65868853 has 2 divisors, whose sum is σ = 65868854. Its totient is φ = 65868852.

The previous prime is 65868851. The next prime is 65868871. The reversal of 65868853 is 35886856.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36687249 + 29181604 = 6057^2 + 5402^2 .

It is a cyclic number.

It is not a de Polignac number, because 65868853 - 2¹ = 65868851 is a prime.

Together with 65868851, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 65868797 and 65868806.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65868851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32934426 + 32934427.

It is an arithmetic number, because the mean of its divisors is an integer number (32934427).

Almost surely, 2^65868853 is an apocalyptic number.

It is an amenable number.

65868853 is a deficient number, since it is larger than the sum of its proper divisors (1).

65868853 is an equidigital number, since it uses as much as digits as its factorization.

65868853 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1382400, while the sum is 49.

The square root of 65868853 is about 8115.9628510732. The cubic root of 65868853 is about 403.8561495669.

The spelling of 65868853 in words is "sixty-five million, eight hundred sixty-eight thousand, eight hundred fifty-three".