16661127 has 12 divisors (see below), whose sum is σ = 25841976. Its totient is φ = 9520560.

The previous prime is 16661123. The next prime is 16661143. The reversal of 16661127 is 72116661.

It is not a de Polignac number, because 16661127 - 2² = 16661123 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 16661094 and 16661103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16661123) 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, 56524 + ... + 56817.

It is an arithmetic number, because the mean of its divisors is an integer number (2153498).

Almost surely, 2^16661127 is an apocalyptic number.

16661127 is a deficient number, since it is larger than the sum of its proper divisors (9180849).

16661127 is a wasteful number, since it uses less digits than its factorization.

16661127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113358 (or 113351 counting only the distinct ones).

The product of its digits is 3024, while the sum is 30.

The square root of 16661127 is about 4081.8043804181. The cubic root of 16661127 is about 255.4081736696.

Adding to 16661127 its reverse (72116661), we get a palindrome (88777788).

The spelling of 16661127 in words is "sixteen million, six hundred sixty-one thousand, one hundred twenty-seven".