4507609 has 6 divisors (see below), whose sum is σ = 4712666. Its totient is φ = 4311120.

The previous prime is 4507603. The next prime is 4507619. The reversal of 4507609 is 9067054.

It can be written as a sum of positive squares in only one way, i.e., 3822025 + 685584 = 1955^2 + 828^2 .

It is a de Polignac number, because none of the positive numbers 2^k-4507609 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4507603) 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, 3732 + ... + 4789.

Almost surely, 2^4507609 is an apocalyptic number.

It is an amenable number.

4507609 is a deficient number, since it is larger than the sum of its proper divisors (205057).

4507609 is an equidigital number, since it uses as much as digits as its factorization.

4507609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8567 (or 8544 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 4507609 is about 2123.1130445645. The cubic root of 4507609 is about 165.1893632480.

The spelling of 4507609 in words is "four million, five hundred seven thousand, six hundred nine".