6421117 has 4 divisors (see below), whose sum is σ = 6700320. Its totient is φ = 6141916.

The previous prime is 6421111. The next prime is 6421127. The reversal of 6421117 is 7111246.

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 6421117 - 2⁷ = 6420989 is a prime.

It is a Duffinian number.

6421117 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6421111) 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, 139567 + ... + 139612.

It is an arithmetic number, because the mean of its divisors is an integer number (1675080).

Almost surely, 2^6421117 is an apocalyptic number.

It is an amenable number.

6421117 is a deficient number, since it is larger than the sum of its proper divisors (279203).

6421117 is a wasteful number, since it uses less digits than its factorization.

6421117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279202.

The product of its digits is 336, while the sum is 22.

The square root of 6421117 is about 2533.9923046450. The cubic root of 6421117 is about 185.8675300650.

The spelling of 6421117 in words is "six million, four hundred twenty-one thousand, one hundred seventeen".