2727649 has 4 divisors (see below), whose sum is σ = 2732080. Its totient is φ = 2723220.

The previous prime is 2727623. The next prime is 2727661. The reversal of 2727649 is 9467272.

It is a happy number.

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 2727649 - 2⁷ = 2727521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2727679) 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, 1107 + ... + 2584.

It is an arithmetic number, because the mean of its divisors is an integer number (683020).

2^2727649 is an apocalyptic number.

It is an amenable number.

2727649 is a deficient number, since it is larger than the sum of its proper divisors (4431).

2727649 is an equidigital number, since it uses as much as digits as its factorization.

2727649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4430.

The product of its digits is 42336, while the sum is 37.

The square root of 2727649 is about 1651.5595659860. The cubic root of 2727649 is about 139.7213675936.

It can be divided in two parts, 272 and 7649, that added together give a square (7921 = 89²).

The spelling of 2727649 in words is "two million, seven hundred twenty-seven thousand, six hundred forty-nine".