2605697 has 4 divisors (see below), whose sum is σ = 2644656. Its totient is φ = 2566740.

The previous prime is 2605663. The next prime is 2605741. The reversal of 2605697 is 7965062.

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.

It is a cyclic number.

It is not a de Polignac number, because 2605697 - 2¹² = 2601601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2605627) 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, 19379 + ... + 19512.

It is an arithmetic number, because the mean of its divisors is an integer number (661164).

2^2605697 is an apocalyptic number.

It is an amenable number.

2605697 is a deficient number, since it is larger than the sum of its proper divisors (38959).

2605697 is an equidigital number, since it uses as much as digits as its factorization.

2605697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38958.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 2605697 is about 1614.2171477221. The cubic root of 2605697 is about 137.6072463565.

The spelling of 2605697 in words is "two million, six hundred five thousand, six hundred ninety-seven".