13008609 has 6 divisors (see below), whose sum is σ = 18790226. Its totient is φ = 8672400.

The previous prime is 13008607. The next prime is 13008629. The reversal of 13008609 is 90680031.

It can be written as a sum of positive squares in only one way, i.e., 11390625 + 1617984 = 3375^2 + 1272^2 .

It is not a de Polignac number, because 13008609 - 2¹ = 13008607 is a prime.

It is a super-2 number, since 2×13008609² = 338447816229762, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13008601) 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, 722692 + ... + 722709.

Almost surely, 2^13008609 is an apocalyptic number.

It is an amenable number.

13008609 is a deficient number, since it is larger than the sum of its proper divisors (5781617).

13008609 is a wasteful number, since it uses less digits than its factorization.

13008609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1445407 (or 1445404 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 13008609 is about 3606.7449313751. The cubic root of 13008609 is about 235.1853615247.

The spelling of 13008609 in words is "thirteen million, eight thousand, six hundred nine".