66932771 has 2 divisors, whose sum is σ = 66932772. Its totient is φ = 66932770.

The previous prime is 66932759. The next prime is 66932773. The reversal of 66932771 is 17723966.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66932771 - 2¹⁰ = 66931747 is a prime.

Together with 66932773, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (66932773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33466385 + 33466386.

It is an arithmetic number, because the mean of its divisors is an integer number (33466386).

Almost surely, 2^66932771 is an apocalyptic number.

66932771 is a deficient number, since it is larger than the sum of its proper divisors (1).

66932771 is an equidigital number, since it uses as much as digits as its factorization.

66932771 is an evil number, because the sum of its binary digits is even.

The product of its digits is 95256, while the sum is 41.

The square root of 66932771 is about 8181.2450763927. The cubic root of 66932771 is about 406.0189169116.

The spelling of 66932771 in words is "sixty-six million, nine hundred thirty-two thousand, seven hundred seventy-one".