2720855 has 4 divisors (see below), whose sum is σ = 3265032. Its totient is φ = 2176680.

The previous prime is 2720849. The next prime is 2720881. The reversal of 2720855 is 5580272.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2720855 - 2¹² = 2716759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 272081 + ... + 272090.

It is an arithmetic number, because the mean of its divisors is an integer number (816258).

2^2720855 is an apocalyptic number.

2720855 is a deficient number, since it is larger than the sum of its proper divisors (544177).

2720855 is an equidigital number, since it uses as much as digits as its factorization.

2720855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544176.

The product of its (nonzero) digits is 5600, while the sum is 29.

The square root of 2720855 is about 1649.5014398296. The cubic root of 2720855 is about 139.6052656312.

It can be divided in two parts, 272085 and 5, that multiplied together give a triangular number (1360425 = T₁₆₄₉).

The spelling of 2720855 in words is "two million, seven hundred twenty thousand, eight hundred fifty-five".