66011347 has 2 divisors, whose sum is σ = 66011348. Its totient is φ = 66011346.

The previous prime is 66011329. The next prime is 66011411. The reversal of 66011347 is 74311066.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66011347 - 2¹¹ = 66009299 is a prime.

It is not a weakly prime, because it can be changed into another prime (66011747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33005673 + 33005674.

It is an arithmetic number, because the mean of its divisors is an integer number (33005674).

Almost surely, 2^66011347 is an apocalyptic number.

66011347 is a deficient number, since it is larger than the sum of its proper divisors (1).

66011347 is an equidigital number, since it uses as much as digits as its factorization.

66011347 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 66011347 is about 8124.7367341964. The cubic root of 66011347 is about 404.1471603061.

The spelling of 66011347 in words is "sixty-six million, eleven thousand, three hundred forty-seven".