6818642 has 4 divisors (see below), whose sum is σ = 10227966. Its totient is φ = 3409320.

The previous prime is 6818629. The next prime is 6818653. The reversal of 6818642 is 2468186.

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

It can be written as a sum of positive squares in only one way, i.e., 4713241 + 2105401 = 2171^2 + 1451^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1704659 + ... + 1704662.

Almost surely, 2^6818642 is an apocalyptic number.

6818642 is a deficient number, since it is larger than the sum of its proper divisors (3409324).

6818642 is a wasteful number, since it uses less digits than its factorization.

6818642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3409323.

The product of its digits is 18432, while the sum is 35.

The square root of 6818642 is about 2611.2529559581. The cubic root of 6818642 is about 189.6266166708.

The spelling of 6818642 in words is "six million, eight hundred eighteen thousand, six hundred forty-two".