166105604 has 48 divisors (see below), whose sum is σ = 340962048. Its totient is φ = 69333888.

The previous prime is 166105579. The next prime is 166105631. The reversal of 166105604 is 406501661.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 256409 + ... + 257055.

It is an arithmetic number, because the mean of its divisors is an integer number (7103376).

Almost surely, 2^166105604 is an apocalyptic number.

166105604 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166105604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170481024).

166105604 is an abundant number, since it is smaller than the sum of its proper divisors (174856444).

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

166105604 is a wasteful number, since it uses less digits than its factorization.

166105604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 884 (or 882 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 166105604 is about 12888.1963051468. The cubic root of 166105604 is about 549.7029845358.

The spelling of 166105604 in words is "one hundred sixty-six million, one hundred five thousand, six hundred four".