166075307 has 2 divisors, whose sum is σ = 166075308. Its totient is φ = 166075306.

The previous prime is 166075303. The next prime is 166075421. The reversal of 166075307 is 703570661.

It is a weak prime.

It is an emirp because it is prime and its reverse (703570661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 166075307 - 2² = 166075303 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (166075303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83037653 + 83037654.

It is an arithmetic number, because the mean of its divisors is an integer number (83037654).

Almost surely, 2^166075307 is an apocalyptic number.

166075307 is a deficient number, since it is larger than the sum of its proper divisors (1).

166075307 is an equidigital number, since it uses as much as digits as its factorization.

166075307 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26460, while the sum is 35.

The square root of 166075307 is about 12887.0208737318. The cubic root of 166075307 is about 549.6695612926.

It can be divided in two parts, 1660 and 75307, that added together give a palindrome (76967).

The spelling of 166075307 in words is "one hundred sixty-six million, seventy-five thousand, three hundred seven".