766666333 has 2 divisors, whose sum is σ = 766666334. Its totient is φ = 766666332.

The previous prime is 766666319. The next prime is 766666343. The reversal of 766666333 is 333666667.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 651168324 + 115498009 = 25518^2 + 10747^2 .

It is a cyclic number.

It is not a de Polignac number, because 766666333 - 2¹³ = 766658141 is a prime.

It is a nialpdrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (766666343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 383333166 + 383333167.

It is an arithmetic number, because the mean of its divisors is an integer number (383333167).

Almost surely, 2^766666333 is an apocalyptic number.

It is an amenable number.

766666333 is a deficient number, since it is larger than the sum of its proper divisors (1).

766666333 is an equidigital number, since it uses as much as digits as its factorization.

766666333 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1469664, while the sum is 46.

The square root of 766666333 is about 27688.7401844143. The cubic root of 766666333 is about 915.2409939827.

The spelling of 766666333 in words is "seven hundred sixty-six million, six hundred sixty-six thousand, three hundred thirty-three".