16985245 has 8 divisors (see below), whose sum is σ = 20433240. Its totient is φ = 13554240.

The previous prime is 16985233. The next prime is 16985249. The reversal of 16985245 is 54258961.

It can be written as a sum of positive squares in 4 ways, for example, as 2643876 + 14341369 = 1626^2 + 3787^2 .

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

It is not a de Polignac number, because 16985245 - 2⁹ = 16984733 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16985198 and 16985207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16985249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1930 + ... + 6139.

It is an arithmetic number, because the mean of its divisors is an integer number (2554155).

Almost surely, 2^16985245 is an apocalyptic number.

It is an amenable number.

16985245 is a deficient number, since it is larger than the sum of its proper divisors (3447995).

16985245 is an equidigital number, since it uses as much as digits as its factorization.

16985245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8495.

The product of its digits is 86400, while the sum is 40.

The square root of 16985245 is about 4121.3159306222. The cubic root of 16985245 is about 257.0537468276.

The spelling of 16985245 in words is "sixteen million, nine hundred eighty-five thousand, two hundred forty-five".