8013609 has 12 divisors (see below), whose sum is σ = 11844976. Its totient is φ = 5217912.

The previous prime is 8013601. The next prime is 8013619. The reversal of 8013609 is 9063108.

It is not a de Polignac number, because 8013609 - 2³ = 8013601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8013601) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9967 + ... + 10740.

Almost surely, 2^8013609 is an apocalyptic number.

It is an amenable number.

8013609 is a deficient number, since it is larger than the sum of its proper divisors (3831367).

8013609 is a wasteful number, since it uses less digits than its factorization.

8013609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20756 (or 20753 counting only the distinct ones).

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

The square root of 8013609 is about 2830.8318565397. The cubic root of 8013609 is about 200.1133440868.

It can be divided in two parts, 80 and 13609, that added together give a square (13689 = 117²).

The spelling of 8013609 in words is "eight million, thirteen thousand, six hundred nine".