16985827 has 4 divisors (see below), whose sum is σ = 17225136. Its totient is φ = 16746520.

The previous prime is 16985803. The next prime is 16985831. The reversal of 16985827 is 72858961.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72858961 = 7 ⋅10408423.

It is a cyclic number.

It is not a de Polignac number, because 16985827 - 2⁷ = 16985699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16985327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119548 + ... + 119689.

It is an arithmetic number, because the mean of its divisors is an integer number (4306284).

Almost surely, 2^16985827 is an apocalyptic number.

16985827 is a deficient number, since it is larger than the sum of its proper divisors (239309).

16985827 is an equidigital number, since it uses as much as digits as its factorization.

16985827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239308.

The product of its digits is 241920, while the sum is 46.

The square root of 16985827 is about 4121.3865385329. The cubic root of 16985827 is about 257.0566827792.

The spelling of 16985827 in words is "sixteen million, nine hundred eighty-five thousand, eight hundred twenty-seven".