16675691 has 8 divisors (see below), whose sum is σ = 17786160. Its totient is φ = 15579648.

The previous prime is 16675679. The next prime is 16675709. The reversal of 16675691 is 19657661.

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 16675691 - 2¹⁰ = 16674667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16675601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1166 + ... + 5891.

It is an arithmetic number, because the mean of its divisors is an integer number (2223270).

Almost surely, 2^16675691 is an apocalyptic number.

16675691 is a deficient number, since it is larger than the sum of its proper divisors (1110469).

16675691 is a wasteful number, since it uses less digits than its factorization.

16675691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7213.

The product of its digits is 68040, while the sum is 41.

The square root of 16675691 is about 4083.5880056636. The cubic root of 16675691 is about 255.4825720244.

It can be divided in two parts, 166 and 75691, that added together give a palindrome (75857).

The spelling of 16675691 in words is "sixteen million, six hundred seventy-five thousand, six hundred ninety-one".