66214307 has 2 divisors, whose sum is σ = 66214308. Its totient is φ = 66214306.

The previous prime is 66214301. The next prime is 66214321. The reversal of 66214307 is 70341266.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66214307 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66214307.

It is not a weakly prime, because it can be changed into another prime (66214301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33107153 + 33107154.

It is an arithmetic number, because the mean of its divisors is an integer number (33107154).

Almost surely, 2^66214307 is an apocalyptic number.

66214307 is a deficient number, since it is larger than the sum of its proper divisors (1).

66214307 is an equidigital number, since it uses as much as digits as its factorization.

66214307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 66214307 is about 8137.2173990867. The cubic root of 66214307 is about 404.5609365665.

The spelling of 66214307 in words is "sixty-six million, two hundred fourteen thousand, three hundred seven".