65712287 has 2 divisors, whose sum is σ = 65712288. Its totient is φ = 65712286.

The previous prime is 65712277. The next prime is 65712301. The reversal of 65712287 is 78221756.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65712287 - 2¹⁰ = 65711263 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 65712287.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65712277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32856143 + 32856144.

It is an arithmetic number, because the mean of its divisors is an integer number (32856144).

Almost surely, 2^65712287 is an apocalyptic number.

65712287 is a deficient number, since it is larger than the sum of its proper divisors (1).

65712287 is an equidigital number, since it uses as much as digits as its factorization.

65712287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47040, while the sum is 38.

The square root of 65712287 is about 8106.3115533515. The cubic root of 65712287 is about 403.5359157321.

The spelling of 65712287 in words is "sixty-five million, seven hundred twelve thousand, two hundred eighty-seven".