166652443 has 2 divisors, whose sum is σ = 166652444. Its totient is φ = 166652442.

The previous prime is 166652419. The next prime is 166652461. The reversal of 166652443 is 344256661.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166652443 is a prime.

It is a super-3 number, since 3×166652443³ (a number of 26 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (166652543) 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, 83326221 + 83326222.

It is an arithmetic number, because the mean of its divisors is an integer number (83326222).

Almost surely, 2^166652443 is an apocalyptic number.

166652443 is a deficient number, since it is larger than the sum of its proper divisors (1).

166652443 is an equidigital number, since it uses as much as digits as its factorization.

166652443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 103680, while the sum is 37.

The square root of 166652443 is about 12909.3935953630. The cubic root of 166652443 is about 550.3055525329.

The spelling of 166652443 in words is "one hundred sixty-six million, six hundred fifty-two thousand, four hundred forty-three".