2779217 has 8 divisors (see below), whose sum is σ = 3208512. Its totient is φ = 2358000.

The previous prime is 2779201. The next prime is 2779229. The reversal of 2779217 is 7129772.

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 2779217 - 2⁴ = 2779201 is a prime.

It is a d-powerful number, because it can be written as 2¹⁷ + 7³ + 7⁴ + 9⁶ + 2²¹ + 1 + 7⁵ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2779237) 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, 1259 + ... + 2672.

It is an arithmetic number, because the mean of its divisors is an integer number (401064).

2^2779217 is an apocalyptic number.

It is an amenable number.

2779217 is a deficient number, since it is larger than the sum of its proper divisors (429295).

2779217 is a wasteful number, since it uses less digits than its factorization.

2779217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4039.

The product of its digits is 12348, while the sum is 35.

The square root of 2779217 is about 1667.0983774211. The cubic root of 2779217 is about 140.5963844326.

The spelling of 2779217 in words is "two million, seven hundred seventy-nine thousand, two hundred seventeen".