6382021 has 4 divisors (see below), whose sum is σ = 6757452. Its totient is φ = 6006592.

The previous prime is 6382007. The next prime is 6382039. The reversal of 6382021 is 1202836.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2030625 + 4351396 = 1425^2 + 2086^2 .

It is a cyclic number.

It is not a de Polignac number, because 6382021 - 2⁹ = 6381509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6381983 and 6382001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6382121) 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, 187690 + ... + 187723.

It is an arithmetic number, because the mean of its divisors is an integer number (1689363).

Almost surely, 2^6382021 is an apocalyptic number.

It is an amenable number.

6382021 is a deficient number, since it is larger than the sum of its proper divisors (375431).

6382021 is a wasteful number, since it uses less digits than its factorization.

6382021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375430.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 6382021 is about 2526.2662171671. The cubic root of 6382021 is about 185.4895337779.

Adding to 6382021 its reverse (1202836), we get a palindrome (7584857).

The spelling of 6382021 in words is "six million, three hundred eighty-two thousand, twenty-one".