6626842 has 4 divisors (see below), whose sum is σ = 9940266. Its totient is φ = 3313420.

The previous prime is 6626833. The next prime is 6626849. The reversal of 6626842 is 2486266.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2486266 = 2 ⋅1243133.

It can be written as a sum of positive squares in only one way, i.e., 6558721 + 68121 = 2561^2 + 261^2 .

It is a junction number, because it is equal to n+sod(n) for n = 6626798 and 6626807.

It is not an unprimeable number, because it can be changed into a prime (6626849) 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 as a sum of consecutive naturals, namely, 1656709 + ... + 1656712.

Almost surely, 2^6626842 is an apocalyptic number.

6626842 is a deficient number, since it is larger than the sum of its proper divisors (3313424).

6626842 is a wasteful number, since it uses less digits than its factorization.

6626842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3313423.

The product of its digits is 27648, while the sum is 34.

The square root of 6626842 is about 2574.2653320899. The cubic root of 6626842 is about 187.8316925845.

The spelling of 6626842 in words is "six million, six hundred twenty-six thousand, eight hundred forty-two".