166422546 has 32 divisors (see below), whose sum is σ = 370480320. Its totient is φ = 55376352.

The previous prime is 166422541. The next prime is 166422547. The reversal of 166422546 is 645224661.

166422546 is a `hidden beast` number, since 1 + 6 + 642 + 2 + 5 + 4 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 166422546.

It is not an unprimeable number, because it can be changed into a prime (166422541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32326 + ... + 37118.

It is an arithmetic number, because the mean of its divisors is an integer number (11577510).

Almost surely, 2^166422546 is an apocalyptic number.

166422546 is an abundant number, since it is smaller than the sum of its proper divisors (204057774).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166422546 is a wasteful number, since it uses less digits than its factorization.

166422546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5447 (or 5441 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 166422546 is about 12900.4862699047. The cubic root of 166422546 is about 550.0523872965.

The spelling of 166422546 in words is "one hundred sixty-six million, four hundred twenty-two thousand, five hundred forty-six".