166604742 has 16 divisors (see below), whose sum is σ = 370232880. Its totient is φ = 55534896.

The previous prime is 166604723. The next prime is 166604783. The reversal of 166604742 is 247406661.

It is a junction number, because it is equal to n+sod(n) for n = 166604697 and 166604706.

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, 1542583 + ... + 1542690.

It is an arithmetic number, because the mean of its divisors is an integer number (23139555).

Almost surely, 2^166604742 is an apocalyptic number.

166604742 is an abundant number, since it is smaller than the sum of its proper divisors (203628138).

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

166604742 is a wasteful number, since it uses less digits than its factorization.

166604742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3085284 (or 3085278 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 166604742 is about 12907.5459325156. The cubic root of 166604742 is about 550.2530427914.

The spelling of 166604742 in words is "one hundred sixty-six million, six hundred four thousand, seven hundred forty-two".