2720549 has 8 divisors (see below), whose sum is σ = 2980320. Its totient is φ = 2468016.

The previous prime is 2720513. The next prime is 2720551. The reversal of 2720549 is 9450272.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2720549 - 2¹² = 2716453 is a prime.

It is a super-2 number, since 2×2720549² = 14802773722802, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2¹⁹ + 7⁵ + 2²¹ + 0 + 5⁷ + 4⁶ + 9² .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2720579) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1007 + ... + 2540.

It is an arithmetic number, because the mean of its divisors is an integer number (372540).

2^2720549 is an apocalyptic number.

It is an amenable number.

2720549 is a deficient number, since it is larger than the sum of its proper divisors (259771).

2720549 is a wasteful number, since it uses less digits than its factorization.

2720549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3619.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 2720549 is about 1649.4086819221. The cubic root of 2720549 is about 139.6000318826.

The spelling of 2720549 in words is "two million, seven hundred twenty thousand, five hundred forty-nine".