6168421 has 8 divisors (see below), whose sum is σ = 7200000. Its totient is φ = 5174448.

The previous prime is 6168413. The next prime is 6168457. The reversal of 6168421 is 1248616.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6168421 - 2³ = 6168413 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6168421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6168401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9046 + ... + 9703.

It is an arithmetic number, because the mean of its divisors is an integer number (900000).

Almost surely, 2^6168421 is an apocalyptic number.

It is an amenable number.

6168421 is a deficient number, since it is larger than the sum of its proper divisors (1031579).

6168421 is a wasteful number, since it uses less digits than its factorization.

6168421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18803.

The product of its digits is 2304, while the sum is 28.

The square root of 6168421 is about 2483.6306086051. The cubic root of 6168421 is about 183.3966235112.

The spelling of 6168421 in words is "six million, one hundred sixty-eight thousand, four hundred twenty-one".