166563342 has 48 divisors (see below), whose sum is σ = 397640880. Its totient is φ = 49968000.

The previous prime is 166563311. The next prime is 166563413. The reversal of 166563342 is 243365661.

166563342 is a `hidden beast` number, since 1 + 66 + 563 + 34 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 166563297 and 166563306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15834 + ... + 24162.

It is an arithmetic number, because the mean of its divisors is an integer number (8284185).

Almost surely, 2^166563342 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166563342, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (198820440).

166563342 is an abundant number, since it is smaller than the sum of its proper divisors (231077538).

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

166563342 is a wasteful number, since it uses less digits than its factorization.

166563342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8449 (or 8446 counting only the distinct ones).

The product of its digits is 77760, while the sum is 36.

The square root of 166563342 is about 12905.9421198144. The cubic root of 166563342 is about 550.2074611293.

The spelling of 166563342 in words is "one hundred sixty-six million, five hundred sixty-three thousand, three hundred forty-two".