65865287 has 2 divisors, whose sum is σ = 65865288. Its totient is φ = 65865286.

The previous prime is 65865281. The next prime is 65865313. The reversal of 65865287 is 78256856.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65865287 - 2¹⁰ = 65864263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65865281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32932643 + 32932644.

It is an arithmetic number, because the mean of its divisors is an integer number (32932644).

Almost surely, 2^65865287 is an apocalyptic number.

65865287 is a deficient number, since it is larger than the sum of its proper divisors (1).

65865287 is an equidigital number, since it uses as much as digits as its factorization.

65865287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 806400, while the sum is 47.

The square root of 65865287 is about 8115.7431575919. The cubic root of 65865287 is about 403.8488614636.

The spelling of 65865287 in words is "sixty-five million, eight hundred sixty-five thousand, two hundred eighty-seven".