16656479 has 8 divisors (see below), whose sum is σ = 19136160. Its totient is φ = 14201856.

The previous prime is 16656463. The next prime is 16656533. The reversal of 16656479 is 97465661.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 16656479 - 2⁴ = 16656463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16656449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4814 + ... + 7515.

It is an arithmetic number, because the mean of its divisors is an integer number (2392020).

Almost surely, 2^16656479 is an apocalyptic number.

16656479 is a deficient number, since it is larger than the sum of its proper divisors (2479681).

16656479 is a wasteful number, since it uses less digits than its factorization.

16656479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12529.

The product of its digits is 272160, while the sum is 44.

The square root of 16656479 is about 4081.2349846584. The cubic root of 16656479 is about 255.3844208226.

The spelling of 16656479 in words is "sixteen million, six hundred fifty-six thousand, four hundred seventy-nine".