65782291 has 2 divisors, whose sum is σ = 65782292. Its totient is φ = 65782290.

The previous prime is 65782267. The next prime is 65782307. The reversal of 65782291 is 19228756.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65782291 - 2⁵ = 65782259 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (65782201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32891145 + 32891146.

It is an arithmetic number, because the mean of its divisors is an integer number (32891146).

Almost surely, 2^65782291 is an apocalyptic number.

65782291 is a deficient number, since it is larger than the sum of its proper divisors (1).

65782291 is an equidigital number, since it uses as much as digits as its factorization.

65782291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 40.

The square root of 65782291 is about 8110.6282740611. The cubic root of 65782291 is about 403.6791619149.

The spelling of 65782291 in words is "sixty-five million, seven hundred eighty-two thousand, two hundred ninety-one".