76666361 has 2 divisors, whose sum is σ = 76666362. Its totient is φ = 76666360.

The previous prime is 76666339. The next prime is 76666367. The reversal of 76666361 is 16366667.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45306361 + 31360000 = 6731^2 + 5600^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76666361 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (76666367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38333180 + 38333181.

It is an arithmetic number, because the mean of its divisors is an integer number (38333181).

Almost surely, 2^76666361 is an apocalyptic number.

It is an amenable number.

76666361 is a deficient number, since it is larger than the sum of its proper divisors (1).

76666361 is an equidigital number, since it uses as much as digits as its factorization.

76666361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 163296, while the sum is 41.

The square root of 76666361 is about 8755.9329028950. The cubic root of 76666361 is about 424.8167348260.

The spelling of 76666361 in words is "seventy-six million, six hundred sixty-six thousand, three hundred sixty-one".