2690043 has 4 divisors (see below), whose sum is σ = 3586728. Its totient is φ = 1793360.

The previous prime is 2690041. The next prime is 2690047. The reversal of 2690043 is 3400962.

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 2690043 - 2¹ = 2690041 is a prime.

It is a D-number.

It is a junction number, because it is equal to n+sod(n) for n = 2689995 and 2690022.

It is not an unprimeable number, because it can be changed into a prime (2690041) 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 3 ways as a sum of consecutive naturals, for example, 448338 + ... + 448343.

It is an arithmetic number, because the mean of its divisors is an integer number (896682).

2^2690043 is an apocalyptic number.

2690043 is a deficient number, since it is larger than the sum of its proper divisors (896685).

2690043 is an equidigital number, since it uses as much as digits as its factorization.

2690043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 896684.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 2690043 is about 1640.1350554146. The cubic root of 2690043 is about 139.0762826806.

The spelling of 2690043 in words is "two million, six hundred ninety thousand, forty-three".