6718949 has 4 divisors (see below), whose sum is σ = 6728736. Its totient is φ = 6709164.

The previous prime is 6718939. The next prime is 6718963. The reversal of 6718949 is 9498176.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6718949 - 2¹² = 6714853 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 (6718919) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3779 + ... + 5264.

It is an arithmetic number, because the mean of its divisors is an integer number (1682184).

Almost surely, 2^6718949 is an apocalyptic number.

It is an amenable number.

6718949 is a deficient number, since it is larger than the sum of its proper divisors (9787).

6718949 is an equidigital number, since it uses as much as digits as its factorization.

6718949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9786.

The product of its digits is 108864, while the sum is 44.

The square root of 6718949 is about 2592.0935554104. The cubic root of 6718949 is about 188.6979208101.

It can be divided in two parts, 6718 and 949, that added together give a palindrome (7667).

The spelling of 6718949 in words is "six million, seven hundred eighteen thousand, nine hundred forty-nine".