2791791 has 24 divisors (see below), whose sum is σ = 4346784. Its totient is φ = 1720320.

The previous prime is 2791783. The next prime is 2791799. The reversal of 2791791 is 1971972.

It is an interprime number because it is at equal distance from previous prime (2791783) and next prime (2791799).

It is not a de Polignac number, because 2791791 - 2³ = 2791783 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2791799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10735 + ... + 10991.

It is an arithmetic number, because the mean of its divisors is an integer number (181116).

2^2791791 is an apocalyptic number.

2791791 is a deficient number, since it is larger than the sum of its proper divisors (1554993).

2791791 is a wasteful number, since it uses less digits than its factorization.

2791791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351 (or 348 counting only the distinct ones).

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

The square root of 2791791 is about 1670.8653446643. The cubic root of 2791791 is about 140.8080986808.

The spelling of 2791791 in words is "two million, seven hundred ninety-one thousand, seven hundred ninety-one".