1609317 has 6 divisors (see below), whose sum is σ = 2324582. Its totient is φ = 1072872.

The previous prime is 1609301. The next prime is 1609367. The reversal of 1609317 is 7139061.

It can be written as a sum of positive squares in only one way, i.e., 1602756 + 6561 = 1266^2 + 81^2 .

It is not a de Polignac number, because 1609317 - 2⁴ = 1609301 is a prime.

It is a Duffinian number.

1609317 is a lucky number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1609367) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 89398 + ... + 89415.

2^1609317 is an apocalyptic number.

It is an amenable number.

1609317 is a deficient number, since it is larger than the sum of its proper divisors (715265).

1609317 is a wasteful number, since it uses less digits than its factorization.

1609317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178819 (or 178816 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 27.

The square root of 1609317 is about 1268.5885857913. The cubic root of 1609317 is about 117.1872958930.

It can be divided in two parts, 16093 and 17, that added together give a triangular number (16110 = T₁₇₉).

The spelling of 1609317 in words is "one million, six hundred nine thousand, three hundred seventeen".