166060691 has 2 divisors, whose sum is σ = 166060692. Its totient is φ = 166060690.

The previous prime is 166060679. The next prime is 166060723. The reversal of 166060691 is 196060661.

It is a weak prime.

It is an emirp because it is prime and its reverse (196060661) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166060691 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (166060991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83030345 + 83030346.

It is an arithmetic number, because the mean of its divisors is an integer number (83030346).

Almost surely, 2^166060691 is an apocalyptic number.

166060691 is a deficient number, since it is larger than the sum of its proper divisors (1).

166060691 is an equidigital number, since it uses as much as digits as its factorization.

166060691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 166060691 is about 12886.4537790658. The cubic root of 166060691 is about 549.6534356643.

The spelling of 166060691 in words is "one hundred sixty-six million, sixty thousand, six hundred ninety-one".