66366347 has 2 divisors, whose sum is σ = 66366348. Its totient is φ = 66366346.

The previous prime is 66366281. The next prime is 66366359. The reversal of 66366347 is 74366366.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66366347 - 2¹⁰ = 66365323 is a prime.

It is not a weakly prime, because it can be changed into another prime (66366367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33183173 + 33183174.

It is an arithmetic number, because the mean of its divisors is an integer number (33183174).

Almost surely, 2^66366347 is an apocalyptic number.

66366347 is a deficient number, since it is larger than the sum of its proper divisors (1).

66366347 is an equidigital number, since it uses as much as digits as its factorization.

66366347 is an evil number, because the sum of its binary digits is even.

The product of its digits is 326592, while the sum is 41.

The square root of 66366347 is about 8146.5543022802. The cubic root of 66366347 is about 404.8703481756.

The spelling of 66366347 in words is "sixty-six million, three hundred sixty-six thousand, three hundred forty-seven".