166067723 has 2 divisors, whose sum is σ = 166067724. Its totient is φ = 166067722.

The previous prime is 166067711. The next prime is 166067731. The reversal of 166067723 is 327760661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 166067723 - 2¹⁴ = 166051339 is a prime.

It is not a weakly prime, because it can be changed into another prime (166067023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83033861 + 83033862.

It is an arithmetic number, because the mean of its divisors is an integer number (83033862).

Almost surely, 2^166067723 is an apocalyptic number.

166067723 is a deficient number, since it is larger than the sum of its proper divisors (1).

166067723 is an equidigital number, since it uses as much as digits as its factorization.

166067723 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63504, while the sum is 38.

The square root of 166067723 is about 12886.7266208297. The cubic root of 166067723 is about 549.6611940896.

The spelling of 166067723 in words is "one hundred sixty-six million, sixty-seven thousand, seven hundred twenty-three".