2653609 has 4 divisors (see below), whose sum is σ = 3032704. Its totient is φ = 2274516.

The previous prime is 2653601. The next prime is 2653613. The reversal of 2653609 is 9063562.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9063562 = 2 ⋅4531781.

It is a cyclic number.

It is not a de Polignac number, because 2653609 - 2³ = 2653601 is a prime.

It is a d-powerful number, because it can be written as 2¹⁹ + 6³ + 5⁵ + 3¹³ + 6³ + 0 + 9⁶ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2653601) 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, 189537 + ... + 189550.

It is an arithmetic number, because the mean of its divisors is an integer number (758176).

2^2653609 is an apocalyptic number.

It is an amenable number.

2653609 is a deficient number, since it is larger than the sum of its proper divisors (379095).

2653609 is an equidigital number, since it uses as much as digits as its factorization.

2653609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379094.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 2653609 is about 1628.9901779937. The cubic root of 2653609 is about 138.4455424145.

It can be divided in two parts, 26 and 53609, that added together give a palindrome (53635).

The spelling of 2653609 in words is "two million, six hundred fifty-three thousand, six hundred nine".