6385421 has 16 divisors (see below), whose sum is σ = 8066304. Its totient is φ = 4925184.

The previous prime is 6385403. The next prime is 6385427. The reversal of 6385421 is 1245836.

6385421 is digitally balanced in base 8, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 6385421 - 2¹⁸ = 6123277 is a prime.

It is a Duffinian number.

6385421 is strictly pandigital in base 8.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6385427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1571 + ... + 3903.

It is an arithmetic number, because the mean of its divisors is an integer number (504144).

Almost surely, 2^6385421 is an apocalyptic number.

It is an amenable number.

6385421 is a deficient number, since it is larger than the sum of its proper divisors (1680883).

6385421 is a wasteful number, since it uses less digits than its factorization.

6385421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2380.

The product of its digits is 5760, while the sum is 29.

The square root of 6385421 is about 2526.9390574369. The cubic root of 6385421 is about 185.5224675697.

The spelling of 6385421 in words is "six million, three hundred eighty-five thousand, four hundred twenty-one".