2720017 has 4 divisors (see below), whose sum is σ = 2880036. Its totient is φ = 2560000.

The previous prime is 2720009. The next prime is 2720071. The reversal of 2720017 is 7100272.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2556801 + 163216 = 1599^2 + 404^2 .

It is a cyclic number.

It is not a de Polignac number, because 2720017 - 2³ = 2720009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2719976 and 2720003.

It is not an unprimeable number, because it can be changed into a prime (2720117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79984 + ... + 80017.

It is an arithmetic number, because the mean of its divisors is an integer number (720009).

2^2720017 is an apocalyptic number.

It is an amenable number.

2720017 is a deficient number, since it is larger than the sum of its proper divisors (160019).

2720017 is a wasteful number, since it uses less digits than its factorization.

2720017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160018.

The product of its (nonzero) digits is 196, while the sum is 19.

The square root of 2720017 is about 1649.2474041210. The cubic root of 2720017 is about 139.5909317514.

Adding to 2720017 its reverse (7100272), we get a palindrome (9820289).

It can be divided in two parts, 27200 and 17, that multiplied together give a square (462400 = 680²).

The spelling of 2720017 in words is "two million, seven hundred twenty thousand, seventeen".