2655709 has 4 divisors (see below), whose sum is σ = 3035104. Its totient is φ = 2276316.

The previous prime is 2655701. The next prime is 2655727. The reversal of 2655709 is 9075562.

2655709 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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: 9075562 = 2 ⋅4537781.

It is not a de Polignac number, because 2655709 - 2³ = 2655701 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 (2655701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 189687 + ... + 189700.

It is an arithmetic number, because the mean of its divisors is an integer number (758776).

2^2655709 is an apocalyptic number.

It is an amenable number.

2655709 is a deficient number, since it is larger than the sum of its proper divisors (379395).

2655709 is an equidigital number, since it uses as much as digits as its factorization.

2655709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379394.

The product of its (nonzero) digits is 18900, while the sum is 34.

The square root of 2655709 is about 1629.6346216254. The cubic root of 2655709 is about 138.4820535683.

It can be divided in two parts, 2655 and 709, that added together give a square (3364 = 58²).

The spelling of 2655709 in words is "two million, six hundred fifty-five thousand, seven hundred nine".