16628705 has 8 divisors (see below), whose sum is σ = 21004800. Its totient is φ = 12602736.

The previous prime is 16628693. The next prime is 16628719. The reversal of 16628705 is 50782661.

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 16628705 - 2⁶ = 16628641 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87425 + ... + 87614.

It is an arithmetic number, because the mean of its divisors is an integer number (2625600).

Almost surely, 2^16628705 is an apocalyptic number.

It is an amenable number.

16628705 is a deficient number, since it is larger than the sum of its proper divisors (4376095).

16628705 is a wasteful number, since it uses less digits than its factorization.

16628705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175063.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 16628705 is about 4077.8309185154. The cubic root of 16628705 is about 255.2423941471.

The spelling of 16628705 in words is "sixteen million, six hundred twenty-eight thousand, seven hundred five".