66339071 has 2 divisors, whose sum is σ = 66339072. Its totient is φ = 66339070.

The previous prime is 66339059. The next prime is 66339079. The reversal of 66339071 is 17093366.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66339071 is a prime.

It is a super-2 number, since 2×66339071² = 8801744682286082, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66339079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33169535 + 33169536.

It is an arithmetic number, because the mean of its divisors is an integer number (33169536).

Almost surely, 2^66339071 is an apocalyptic number.

66339071 is a deficient number, since it is larger than the sum of its proper divisors (1).

66339071 is an equidigital number, since it uses as much as digits as its factorization.

66339071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20412, while the sum is 35.

The square root of 66339071 is about 8144.8800482266. The cubic root of 66339071 is about 404.8148744938.

The spelling of 66339071 in words is "sixty-six million, three hundred thirty-nine thousand, seventy-one".