16106691 has 4 divisors (see below), whose sum is σ = 21475592. Its totient is φ = 10737792.

The previous prime is 16106677. The next prime is 16106711. The reversal of 16106691 is 19660161.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19660161 = 3 ⋅6553387.

It is not a de Polignac number, because 16106691 - 2⁵ = 16106659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16106291) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2684446 + ... + 2684451.

It is an arithmetic number, because the mean of its divisors is an integer number (5368898).

Almost surely, 2^16106691 is an apocalyptic number.

16106691 is a deficient number, since it is larger than the sum of its proper divisors (5368901).

16106691 is an equidigital number, since it uses as much as digits as its factorization.

16106691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5368900.

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 16106691 is about 4013.3142164550. The cubic root of 16106691 is about 252.5430622893.

The spelling of 16106691 in words is "sixteen million, one hundred six thousand, six hundred ninety-one".