76666339 has 2 divisors, whose sum is σ = 76666340. Its totient is φ = 76666338.

The previous prime is 76666333. The next prime is 76666361. The reversal of 76666339 is 93366667.

It is a weak prime.

It is an emirp because it is prime and its reverse (93366667) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 76666339 - 2⁵ = 76666307 is a prime.

It is not a weakly prime, because it can be changed into another prime (76666333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38333169 + 38333170.

It is an arithmetic number, because the mean of its divisors is an integer number (38333170).

Almost surely, 2^76666339 is an apocalyptic number.

76666339 is a deficient number, since it is larger than the sum of its proper divisors (1).

76666339 is an equidigital number, since it uses as much as digits as its factorization.

76666339 is an evil number, because the sum of its binary digits is even.

The product of its digits is 734832, while the sum is 46.

The square root of 76666339 is about 8755.9316466039. The cubic root of 76666339 is about 424.8166941912.

The spelling of 76666339 in words is "seventy-six million, six hundred sixty-six thousand, three hundred thirty-nine".