166632287 has 2 divisors, whose sum is σ = 166632288. Its totient is φ = 166632286.

The previous prime is 166632269. The next prime is 166632293. The reversal of 166632287 is 782236661.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 166632287 - 2²⁰ = 165583711 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166632187) 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, 83316143 + 83316144.

It is an arithmetic number, because the mean of its divisors is an integer number (83316144).

Almost surely, 2^166632287 is an apocalyptic number.

166632287 is a deficient number, since it is larger than the sum of its proper divisors (1).

166632287 is an equidigital number, since it uses as much as digits as its factorization.

166632287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 41.

The square root of 166632287 is about 12908.6128999207. The cubic root of 166632287 is about 550.2833658276.

The spelling of 166632287 in words is "one hundred sixty-six million, six hundred thirty-two thousand, two hundred eighty-seven".