2784991 has 16 divisors (see below), whose sum is σ = 3289248. Its totient is φ = 2329600.

The previous prime is 2784979. The next prime is 2784997. The reversal of 2784991 is 1994872.

It is a cyclic number.

It is not a de Polignac number, because 2784991 - 2⁹ = 2784479 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 (2784997) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9771 + ... + 10051.

It is an arithmetic number, because the mean of its divisors is an integer number (205578).

2^2784991 is an apocalyptic number.

2784991 is a deficient number, since it is larger than the sum of its proper divisors (504257).

2784991 is a wasteful number, since it uses less digits than its factorization.

2784991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362.

The product of its digits is 36288, while the sum is 40.

The square root of 2784991 is about 1668.8292303289. The cubic root of 2784991 is about 140.6936830579.

The spelling of 2784991 in words is "two million, seven hundred eighty-four thousand, nine hundred ninety-one".