166043627 has 2 divisors, whose sum is σ = 166043628. Its totient is φ = 166043626.

The previous prime is 166043623. The next prime is 166043639. The reversal of 166043627 is 726340661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 166043627 - 2² = 166043623 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (166043623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83021813 + 83021814.

It is an arithmetic number, because the mean of its divisors is an integer number (83021814).

Almost surely, 2^166043627 is an apocalyptic number.

166043627 is a deficient number, since it is larger than the sum of its proper divisors (1).

166043627 is an equidigital number, since it uses as much as digits as its factorization.

166043627 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 166043627 is about 12885.7916714496. The cubic root of 166043627 is about 549.6346079946.

The spelling of 166043627 in words is "one hundred sixty-six million, forty-three thousand, six hundred twenty-seven".