427666333 has 2 divisors, whose sum is σ = 427666334. Its totient is φ = 427666332.

The previous prime is 427666319. The next prime is 427666357. The reversal of 427666333 is 333666724.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 367028964 + 60637369 = 19158^2 + 7787^2 .

It is a cyclic number.

It is not a de Polignac number, because 427666333 - 2¹³ = 427658141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (427666033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213833166 + 213833167.

It is an arithmetic number, because the mean of its divisors is an integer number (213833167).

Almost surely, 2^427666333 is an apocalyptic number.

It is an amenable number.

427666333 is a deficient number, since it is larger than the sum of its proper divisors (1).

427666333 is an equidigital number, since it uses as much as digits as its factorization.

427666333 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 326592, while the sum is 40.

The square root of 427666333 is about 20680.0950916576. The cubic root of 427666333 is about 753.4163157907.

The spelling of 427666333 in words is "four hundred twenty-seven million, six hundred sixty-six thousand, three hundred thirty-three".