16630417 has 4 divisors (see below), whose sum is σ = 16640820. Its totient is φ = 16620016.

The previous prime is 16630399. The next prime is 16630429. The reversal of 16630417 is 71403661.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 3154176 + 13476241 = 1776^2 + 3671^2 .

It is a cyclic number.

It is not a de Polignac number, because 16630417 - 2¹⁵ = 16597649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16630487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2242 + ... + 6187.

It is an arithmetic number, because the mean of its divisors is an integer number (4160205).

Almost surely, 2^16630417 is an apocalyptic number.

It is an amenable number.

16630417 is a deficient number, since it is larger than the sum of its proper divisors (10403).

16630417 is an equidigital number, since it uses as much as digits as its factorization.

16630417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10402.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 16630417 is about 4078.0408286333. The cubic root of 16630417 is about 255.2511532975.

The spelling of 16630417 in words is "sixteen million, six hundred thirty thousand, four hundred seventeen".