3659617 has 4 divisors (see below), whose sum is σ = 3941140. Its totient is φ = 3378096.

The previous prime is 3659611. The next prime is 3659627. The reversal of 3659617 is 7169563.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7169563 = 17 ⋅421739.

It can be written as a sum of positive squares in 2 ways, for example, as 1893376 + 1766241 = 1376^2 + 1329^2 .

It is a cyclic number.

It is not a de Polignac number, because 3659617 - 2¹⁹ = 3135329 is a prime.

It is a Duffinian number.

3659617 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3659611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140742 + ... + 140767.

It is an arithmetic number, because the mean of its divisors is an integer number (985285).

Almost surely, 2^3659617 is an apocalyptic number.

It is an amenable number.

3659617 is a deficient number, since it is larger than the sum of its proper divisors (281523).

3659617 is a wasteful number, since it uses less digits than its factorization.

3659617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281522.

The product of its digits is 34020, while the sum is 37.

The square root of 3659617 is about 1913.0125456985. The cubic root of 3659617 is about 154.1032786724.

The spelling of 3659617 in words is "three million, six hundred fifty-nine thousand, six hundred seventeen".