65766671 has 2 divisors, whose sum is σ = 65766672. Its totient is φ = 65766670.

The previous prime is 65766611. The next prime is 65766689. The reversal of 65766671 is 17666756.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65766671 - 2¹⁰ = 65765647 is a prime.

It is a super-3 number, since 3×65766671³ (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 (65766611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32883335 + 32883336.

It is an arithmetic number, because the mean of its divisors is an integer number (32883336).

Almost surely, 2^65766671 is an apocalyptic number.

65766671 is a deficient number, since it is larger than the sum of its proper divisors (1).

65766671 is an equidigital number, since it uses as much as digits as its factorization.

65766671 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 317520, while the sum is 44.

The square root of 65766671 is about 8109.6652828585. The cubic root of 65766671 is about 403.6472081902.

The spelling of 65766671 in words is "sixty-five million, seven hundred sixty-six thousand, six hundred seventy-one".