16646117 has 8 divisors (see below), whose sum is σ = 17269824. Its totient is φ = 16033248.

The previous prime is 16646099. The next prime is 16646167. The reversal of 16646117 is 71164661.

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 16646117 - 2⁶ = 16646053 is a prime.

It is a super-2 number, since 2×16646117² = 554186422355378, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16646167) 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, 488 + ... + 5790.

It is an arithmetic number, because the mean of its divisors is an integer number (2158728).

Almost surely, 2^16646117 is an apocalyptic number.

It is an amenable number.

16646117 is a deficient number, since it is larger than the sum of its proper divisors (623707).

16646117 is an equidigital number, since it uses as much as digits as its factorization.

16646117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5419.

The product of its digits is 6048, while the sum is 32.

The square root of 16646117 is about 4079.9653184800. The cubic root of 16646117 is about 255.3314515984.

The spelling of 16646117 in words is "sixteen million, six hundred forty-six thousand, one hundred seventeen".