16665127 has 8 divisors (see below), whose sum is σ = 16949520. Its totient is φ = 16383360.

The previous prime is 16665043. The next prime is 16665137. The reversal of 16665127 is 72156661.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16665127 - 2¹⁵ = 16632359 is a prime.

It is a super-2 number, since 2×16665127² = 555452915852258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16665092 and 16665101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16665137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15177 + ... + 16237.

It is an arithmetic number, because the mean of its divisors is an integer number (2118690).

Almost surely, 2^16665127 is an apocalyptic number.

16665127 is a deficient number, since it is larger than the sum of its proper divisors (284393).

16665127 is a wasteful number, since it uses less digits than its factorization.

16665127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1313.

The product of its digits is 15120, while the sum is 34.

The square root of 16665127 is about 4082.2943303980. The cubic root of 16665127 is about 255.4286114817.

The spelling of 16665127 in words is "sixteen million, six hundred sixty-five thousand, one hundred twenty-seven".