6380421 has 8 divisors (see below), whose sum is σ = 8533824. Its totient is φ = 4240320.

The previous prime is 6380401. The next prime is 6380443. The reversal of 6380421 is 1240836.

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 6380421 - 2⁶ = 6380357 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 6380391 and 6380400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6380401) 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 in 7 ways as a sum of consecutive naturals, for example, 2145 + ... + 4166.

It is an arithmetic number, because the mean of its divisors is an integer number (1066728).

Almost surely, 2^6380421 is an apocalyptic number.

It is an amenable number.

6380421 is a deficient number, since it is larger than the sum of its proper divisors (2153403).

6380421 is a wasteful number, since it uses less digits than its factorization.

6380421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6651.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 6380421 is about 2525.9495244363. The cubic root of 6380421 is about 185.4740314754.

The spelling of 6380421 in words is "six million, three hundred eighty thousand, four hundred twenty-one".