16628075 has 6 divisors (see below), whose sum is σ = 20618844. Its totient is φ = 13302440.

The previous prime is 16628071. The next prime is 16628077. The reversal of 16628075 is 57082661.

It is not a de Polignac number, because 16628075 - 2² = 16628071 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16628071) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 332537 + ... + 332586.

It is an arithmetic number, because the mean of its divisors is an integer number (3436474).

Almost surely, 2^16628075 is an apocalyptic number.

16628075 is a deficient number, since it is larger than the sum of its proper divisors (3990769).

16628075 is an equidigital number, since it uses as much as digits as its factorization.

16628075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665133 (or 665128 counting only the distinct ones).

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

The square root of 16628075 is about 4077.7536708340. The cubic root of 16628075 is about 255.2391707103.

The spelling of 16628075 in words is "sixteen million, six hundred twenty-eight thousand, seventy-five".