2604609 has 16 divisors (see below), whose sum is σ = 4410240. Its totient is φ = 1488240.

The previous prime is 2604601. The next prime is 2604611. The reversal of 2604609 is 9064062.

It is not a de Polignac number, because 2604609 - 2³ = 2604601 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

2604609 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2604601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6702 + ... + 7079.

It is an arithmetic number, because the mean of its divisors is an integer number (275640).

2^2604609 is an apocalyptic number.

It is an amenable number.

2604609 is a deficient number, since it is larger than the sum of its proper divisors (1805631).

2604609 is a wasteful number, since it uses less digits than its factorization.

2604609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13797 (or 13791 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 2604609 is about 1613.8801070712. The cubic root of 2604609 is about 137.5880912095.

The spelling of 2604609 in words is "two million, six hundred four thousand, six hundred nine".