65868871 has 2 divisors, whose sum is σ = 65868872. Its totient is φ = 65868870.

The previous prime is 65868853. The next prime is 65868911. The reversal of 65868871 is 17886856.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65868871 - 2⁷ = 65868743 is a prime.

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, 32934435 + 32934436.

It is an arithmetic number, because the mean of its divisors is an integer number (32934436).

Almost surely, 2^65868871 is an apocalyptic number.

65868871 is a deficient number, since it is larger than the sum of its proper divisors (1).

65868871 is an equidigital number, since it uses as much as digits as its factorization.

65868871 is an evil number, because the sum of its binary digits is even.

The product of its digits is 645120, while the sum is 49.

The square root of 65868871 is about 8115.9639599988. The cubic root of 65868871 is about 403.8561863542.

The spelling of 65868871 in words is "sixty-five million, eight hundred sixty-eight thousand, eight hundred seventy-one".