16879643 has 4 divisors (see below), whose sum is σ = 18414168. Its totient is φ = 15345120.

The previous prime is 16879613. The next prime is 16879669. The reversal of 16879643 is 34697861.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16879643 - 2⁶ = 16879579 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 16879594 and 16879603.

It is not an unprimeable number, because it can be changed into a prime (16879613) 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, 767246 + ... + 767267.

It is an arithmetic number, because the mean of its divisors is an integer number (4603542).

Almost surely, 2^16879643 is an apocalyptic number.

16879643 is a deficient number, since it is larger than the sum of its proper divisors (1534525).

16879643 is a wasteful number, since it uses less digits than its factorization.

16879643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1534524.

The product of its digits is 217728, while the sum is 44.

The square root of 16879643 is about 4108.4842703849. The cubic root of 16879643 is about 256.5199140468.

The spelling of 16879643 in words is "sixteen million, eight hundred seventy-nine thousand, six hundred forty-three".