166400106 has 16 divisors (see below), whose sum is σ = 333445248. Its totient is φ = 55359200.

The previous prime is 166400093. The next prime is 166400123. The reversal of 166400106 is 601004661.

It is a super-2 number, since 2×166400106² = 55377990553622472, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 23490 + ... + 29741.

It is an arithmetic number, because the mean of its divisors is an integer number (20840328).

Almost surely, 2^166400106 is an apocalyptic number.

166400106 is an abundant number, since it is smaller than the sum of its proper divisors (167045142).

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

166400106 is a wasteful number, since it uses less digits than its factorization.

166400106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53757.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 166400106 is about 12899.6165059276. The cubic root of 166400106 is about 550.0276636223.

Adding to 166400106 its reverse (601004661), we get a palindrome (767404767).

The spelling of 166400106 in words is "one hundred sixty-six million, four hundred thousand, one hundred six".