2991717 has 12 divisors (see below), whose sum is σ = 4461184. Its totient is φ = 1929960.

The previous prime is 2991707. The next prime is 2991719. The reversal of 2991717 is 7171992.

It is not a de Polignac number, because 2991717 - 2⁴ = 2991701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2991719) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5083 + ... + 5640.

2^2991717 is an apocalyptic number.

It is an amenable number.

2991717 is a deficient number, since it is larger than the sum of its proper divisors (1469467).

2991717 is a wasteful number, since it uses less digits than its factorization.

2991717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10760 (or 10757 counting only the distinct ones).

The product of its digits is 7938, while the sum is 36.

The square root of 2991717 is about 1729.6580586925. The cubic root of 2991717 is about 144.0920996471.

It can be divided in two parts, 299 and 1717, that added together give a triangular number (2016 = T₆₃).

The spelling of 2991717 in words is "two million, nine hundred ninety-one thousand, seven hundred seventeen".