65782447 has 2 divisors, whose sum is σ = 65782448. Its totient is φ = 65782446.

The previous prime is 65782441. The next prime is 65782471. The reversal of 65782447 is 74428756.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65782447 - 2³ = 65782439 is a prime.

It is a zygodrome in base 4.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65782441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32891223 + 32891224.

It is an arithmetic number, because the mean of its divisors is an integer number (32891224).

Almost surely, 2^65782447 is an apocalyptic number.

65782447 is a deficient number, since it is larger than the sum of its proper divisors (1).

65782447 is an equidigital number, since it uses as much as digits as its factorization.

65782447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 376320, while the sum is 43.

The square root of 65782447 is about 8110.6378910663. The cubic root of 65782447 is about 403.6794810175.

It can be divided in two parts, 6578 and 2447, that added together give a square (9025 = 95²).

The spelling of 65782447 in words is "sixty-five million, seven hundred eighty-two thousand, four hundred forty-seven".