65868851 has 2 divisors, whose sum is σ = 65868852. Its totient is φ = 65868850.

The previous prime is 65868827. The next prime is 65868853. The reversal of 65868851 is 15886856.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65868851 - 2⁶ = 65868787 is a prime.

Together with 65868853, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 65868796 and 65868805.

It is not a weakly prime, because it can be changed into another prime (65868853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32934425 + 32934426.

It is an arithmetic number, because the mean of its divisors is an integer number (32934426).

Almost surely, 2^65868851 is an apocalyptic number.

65868851 is a deficient number, since it is larger than the sum of its proper divisors (1).

65868851 is an equidigital number, since it uses as much as digits as its factorization.

65868851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 460800, while the sum is 47.

The square root of 65868851 is about 8115.9627278592. The cubic root of 65868851 is about 403.8561454794.

The spelling of 65868851 in words is "sixty-five million, eight hundred sixty-eight thousand, eight hundred fifty-one".