16674449 has 16 divisors (see below), whose sum is σ = 18990720. Its totient is φ = 14501760.

The previous prime is 16674443. The next prime is 16674461. The reversal of 16674449 is 94447661.

It is a cyclic number.

It is not a de Polignac number, because 16674449 - 2⁸ = 16674193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16674443) 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, 53117 + ... + 53429.

It is an arithmetic number, because the mean of its divisors is an integer number (1186920).

Almost surely, 2^16674449 is an apocalyptic number.

It is an amenable number.

16674449 is a deficient number, since it is larger than the sum of its proper divisors (2316271).

16674449 is a wasteful number, since it uses less digits than its factorization.

16674449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520.

The product of its digits is 145152, while the sum is 41.

The square root of 16674449 is about 4083.4359306839. The cubic root of 16674449 is about 255.4762291142.

It can be divided in two parts, 1667 and 4449, that added together give a palindrome (6116).

The spelling of 16674449 in words is "sixteen million, six hundred seventy-four thousand, four hundred forty-nine".