6940003 has 4 divisors (see below), whose sum is σ = 7931440. Its totient is φ = 5948568.

The previous prime is 6939967. The next prime is 6940007. The reversal of 6940003 is 3000496.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6940003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6940007) 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, 495708 + ... + 495721.

It is an arithmetic number, because the mean of its divisors is an integer number (1982860).

Almost surely, 2^6940003 is an apocalyptic number.

6940003 is a deficient number, since it is larger than the sum of its proper divisors (991437).

6940003 is an equidigital number, since it uses as much as digits as its factorization.

6940003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 991436.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 6940003 is about 2634.3885438561. The cubic root of 6940003 is about 190.7450249403.

Adding to 6940003 its reverse (3000496), we get a palindrome (9940499).

The spelling of 6940003 in words is "six million, nine hundred forty thousand, three".