2647655 has 4 divisors (see below), whose sum is σ = 3177192. Its totient is φ = 2118120.

The previous prime is 2647649. The next prime is 2647681. The reversal of 2647655 is 5567462.

2647655 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 an emirpimes, since its reverse is a distinct semiprime: 5567462 = 2 ⋅2783731.

It is not a de Polignac number, because 2647655 - 2¹² = 2643559 is a prime.

It is a Duffinian number.

It is a zygodrome in base 3.

It is a congruent number.

It is an unprimeable number.

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, 264761 + ... + 264770.

It is an arithmetic number, because the mean of its divisors is an integer number (794298).

2^2647655 is an apocalyptic number.

2647655 is a deficient number, since it is larger than the sum of its proper divisors (529537).

2647655 is an equidigital number, since it uses as much as digits as its factorization.

2647655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529536.

The product of its digits is 50400, while the sum is 35.

The square root of 2647655 is about 1627.1616391742. The cubic root of 2647655 is about 138.3419197586.

The spelling of 2647655 in words is "two million, six hundred forty-seven thousand, six hundred fifty-five".