166611103 has 12 divisors (see below), whose sum is σ = 176936688. Its totient is φ = 156590720.

The previous prime is 166611073. The next prime is 166611121. The reversal of 166611103 is 301116661.

It is not a de Polignac number, because 166611103 - 2¹³ = 166602911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166611163) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 79023 + ... + 81103.

It is an arithmetic number, because the mean of its divisors is an integer number (14744724).

Almost surely, 2^166611103 is an apocalyptic number.

166611103 is a deficient number, since it is larger than the sum of its proper divisors (10325585).

166611103 is an equidigital number, since it uses as much as digits as its factorization.

166611103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2222 (or 2163 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 166611103 is about 12907.7923364145. The cubic root of 166611103 is about 550.2600456234.

Adding to 166611103 its reverse (301116661), we get a palindrome (467727764).

It can be divided in two parts, 1666 and 11103, that added together give a square (12769 = 113²).

The spelling of 166611103 in words is "one hundred sixty-six million, six hundred eleven thousand, one hundred three".