1606417 has 4 divisors (see below), whose sum is σ = 1623076. Its totient is φ = 1589760.

The previous prime is 1606403. The next prime is 1606427. The reversal of 1606417 is 7146061.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 331776 + 1274641 = 576^2 + 1129^2 .

It is a cyclic number.

It is not a de Polignac number, because 1606417 - 2⁷ = 1606289 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1606391 and 1606400.

It is not an unprimeable number, because it can be changed into a prime (1606427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8184 + ... + 8377.

It is an arithmetic number, because the mean of its divisors is an integer number (405769).

2^1606417 is an apocalyptic number.

It is an amenable number.

1606417 is a deficient number, since it is larger than the sum of its proper divisors (16659).

1606417 is an equidigital number, since it uses as much as digits as its factorization.

1606417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16658.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 1606417 is about 1267.4450678432. The cubic root of 1606417 is about 117.1168628053.

The spelling of 1606417 in words is "one million, six hundred six thousand, four hundred seventeen".