6876021 has 8 divisors (see below), whose sum is σ = 9185440. Its totient is φ = 4575312.

The previous prime is 6875993. The next prime is 6876029. The reversal of 6876021 is 1206786.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6876021 - 2⁵ = 6875989 is a prime.

It is an Ulam number.

It is a Duffinian number.

6876021 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 6876021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6876029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31 + ... + 3708.

It is an arithmetic number, because the mean of its divisors is an integer number (1148180).

Almost surely, 2^6876021 is an apocalyptic number.

It is an amenable number.

6876021 is a deficient number, since it is larger than the sum of its proper divisors (2309419).

6876021 is a wasteful number, since it uses less digits than its factorization.

6876021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4355.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 6876021 is about 2622.2168102581. The cubic root of 6876021 is about 190.1570354557.

The spelling of 6876021 in words is "six million, eight hundred seventy-six thousand, twenty-one".