6326421 has 4 divisors (see below), whose sum is σ = 8435232. Its totient is φ = 4217612.

The previous prime is 6326389. The next prime is 6326443. The reversal of 6326421 is 1246236.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6326421 - 2⁵ = 6326389 is a prime.

It is a D-number.

6326421 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 6326391 and 6326400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6326521) 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, 1054401 + ... + 1054406.

It is an arithmetic number, because the mean of its divisors is an integer number (2108808).

Almost surely, 2^6326421 is an apocalyptic number.

It is an amenable number.

6326421 is a deficient number, since it is larger than the sum of its proper divisors (2108811).

6326421 is a wasteful number, since it uses less digits than its factorization.

6326421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2108810.

The product of its digits is 1728, while the sum is 24.

The square root of 6326421 is about 2515.2377621211. The cubic root of 6326421 is about 184.9493019101.

The spelling of 6326421 in words is "six million, three hundred twenty-six thousand, four hundred twenty-one".