65782471 has 2 divisors, whose sum is σ = 65782472. Its totient is φ = 65782470.

The previous prime is 65782447. The next prime is 65782511. The reversal of 65782471 is 17428756.

It is an a-pointer prime, because the next prime (65782511) can be obtained adding 65782471 to its sum of digits (40).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65782471 - 2⁵ = 65782439 is a prime.

It is a super-3 number, since 3×65782471³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65782421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32891235 + 32891236.

It is an arithmetic number, because the mean of its divisors is an integer number (32891236).

Almost surely, 2^65782471 is an apocalyptic number.

65782471 is a deficient number, since it is larger than the sum of its proper divisors (1).

65782471 is an equidigital number, since it uses as much as digits as its factorization.

65782471 is an evil number, because the sum of its binary digits is even.

The product of its digits is 94080, while the sum is 40.

The square root of 65782471 is about 8110.6393706045. The cubic root of 65782471 is about 403.6795301101.

The spelling of 65782471 in words is "sixty-five million, seven hundred eighty-two thousand, four hundred seventy-one".