6481421 has 4 divisors (see below), whose sum is σ = 6493344. Its totient is φ = 6469500.

The previous prime is 6481417. The next prime is 6481427. The reversal of 6481421 is 1241846.

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 6481421 - 2² = 6481417 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6481427) 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 3 ways as a sum of consecutive naturals, for example, 5105 + ... + 6246.

It is an arithmetic number, because the mean of its divisors is an integer number (1623336).

Almost surely, 2^6481421 is an apocalyptic number.

It is an amenable number.

6481421 is a deficient number, since it is larger than the sum of its proper divisors (11923).

6481421 is a wasteful number, since it uses less digits than its factorization.

6481421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11922.

The product of its digits is 1536, while the sum is 26.

The square root of 6481421 is about 2545.8635077317. The cubic root of 6481421 is about 186.4475770692.

The spelling of 6481421 in words is "six million, four hundred eighty-one thousand, four hundred twenty-one".