5663609 has 4 divisors (see below), whose sum is σ = 6472704. Its totient is φ = 4854516.

The previous prime is 5663597. The next prime is 5663611. The reversal of 5663609 is 9063665.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5663609 - 2⁸ = 5663353 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (5663689) 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, 404537 + ... + 404550.

It is an arithmetic number, because the mean of its divisors is an integer number (1618176).

Almost surely, 2^5663609 is an apocalyptic number.

It is an amenable number.

5663609 is a deficient number, since it is larger than the sum of its proper divisors (809095).

5663609 is an equidigital number, since it uses as much as digits as its factorization.

5663609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 809094.

The product of its (nonzero) digits is 29160, while the sum is 35.

The square root of 5663609 is about 2379.8338177276. The cubic root of 5663609 is about 178.2506358548.

The spelling of 5663609 in words is "five million, six hundred sixty-three thousand, six hundred nine".