166623452 has 24 divisors (see below), whose sum is σ = 303282672. Its totient is φ = 80035200.

The previous prime is 166623433. The next prime is 166623461. The reversal of 166623452 is 254326661.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 2552 + ... + 18432.

It is an arithmetic number, because the mean of its divisors is an integer number (12636778).

Almost surely, 2^166623452 is an apocalyptic number.

It is an amenable number.

166623452 is a deficient number, since it is larger than the sum of its proper divisors (136659220).

166623452 is a wasteful number, since it uses less digits than its factorization.

166623452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15989 (or 15987 counting only the distinct ones).

The product of its digits is 51840, while the sum is 35.

The square root of 166623452 is about 12908.2706820085. The cubic root of 166623452 is about 550.2736401425.

The spelling of 166623452 in words is "one hundred sixty-six million, six hundred twenty-three thousand, four hundred fifty-two".