66677333 has 2 divisors, whose sum is σ = 66677334. Its totient is φ = 66677332.

The previous prime is 66677329. The next prime is 66677353. The reversal of 66677333 is 33377666.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65254084 + 1423249 = 8078^2 + 1193^2 .

It is a cyclic number.

It is not a de Polignac number, because 66677333 - 2² = 66677329 is a prime.

It is a zygodrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66677353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33338666 + 33338667.

It is an arithmetic number, because the mean of its divisors is an integer number (33338667).

Almost surely, 2^66677333 is an apocalyptic number.

It is an amenable number.

66677333 is a deficient number, since it is larger than the sum of its proper divisors (1).

66677333 is an equidigital number, since it uses as much as digits as its factorization.

66677333 is an evil number, because the sum of its binary digits is even.

The product of its digits is 285768, while the sum is 41.

The square root of 66677333 is about 8165.6189600054. The cubic root of 66677333 is about 405.5017568163.

The spelling of 66677333 in words is "sixty-six million, six hundred seventy-seven thousand, three hundred thirty-three".