2766991 has 4 divisors (see below), whose sum is σ = 2776312. Its totient is φ = 2757672.

The previous prime is 2766983. The next prime is 2766997. The reversal of 2766991 is 1996672.

2766991 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 2766991 - 2³ = 2766983 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 (2766997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4200 + ... + 4813.

It is an arithmetic number, because the mean of its divisors is an integer number (694078).

2^2766991 is an apocalyptic number.

2766991 is a deficient number, since it is larger than the sum of its proper divisors (9321).

2766991 is an equidigital number, since it uses as much as digits as its factorization.

2766991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9320.

The product of its digits is 40824, while the sum is 40.

The square root of 2766991 is about 1663.4274856452. The cubic root of 2766991 is about 140.3899164302.

The spelling of 2766991 in words is "two million, seven hundred sixty-six thousand, nine hundred ninety-one".