6876621 has 12 divisors (see below), whose sum is σ = 10036572. Its totient is φ = 4536576.

The previous prime is 6876607. The next prime is 6876629. The reversal of 6876621 is 1266786.

It is a happy number.

6876621 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1988100 + 4888521 = 1410^2 + 2211^2 .

It is not a de Polignac number, because 6876621 - 2¹¹ = 6874573 is a prime.

6876621 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6876629) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3066 + ... + 4811.

It is an arithmetic number, because the mean of its divisors is an integer number (836381).

Almost surely, 2^6876621 is an apocalyptic number.

It is an amenable number.

6876621 is a deficient number, since it is larger than the sum of its proper divisors (3159951).

6876621 is a wasteful number, since it uses less digits than its factorization.

6876621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7980 (or 7977 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 6876621 is about 2622.3312147782. The cubic root of 6876621 is about 190.1625663144.

The spelling of 6876621 in words is "six million, eight hundred seventy-six thousand, six hundred twenty-one".