16864845 has 16 divisors (see below), whose sum is σ = 27043200. Its totient is φ = 8974784.

The previous prime is 16864831. The next prime is 16864847. The reversal of 16864845 is 54846861.

It is a cyclic number.

It is not a de Polignac number, because 16864845 - 2¹² = 16860749 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16864797 and 16864806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16864847) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8047 + ... + 9923.

It is an arithmetic number, because the mean of its divisors is an integer number (1690200).

Almost surely, 2^16864845 is an apocalyptic number.

16864845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16864845 is a deficient number, since it is larger than the sum of its proper divisors (10178355).

16864845 is a wasteful number, since it uses less digits than its factorization.

16864845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2484.

The product of its digits is 184320, while the sum is 42.

The square root of 16864845 is about 4106.6829680412. The cubic root of 16864845 is about 256.4449304010. Note that the first 3 decimals are identical.

The spelling of 16864845 in words is "sixteen million, eight hundred sixty-four thousand, eight hundred forty-five".