6893421 has 4 divisors (see below), whose sum is σ = 9191232. Its totient is φ = 4595612.

The previous prime is 6893417. The next prime is 6893423. The reversal of 6893421 is 1243986.

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 6893421 - 2² = 6893417 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6893423) 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, 1148901 + ... + 1148906.

It is an arithmetic number, because the mean of its divisors is an integer number (2297808).

Almost surely, 2^6893421 is an apocalyptic number.

It is an amenable number.

6893421 is a deficient number, since it is larger than the sum of its proper divisors (2297811).

6893421 is a wasteful number, since it uses less digits than its factorization.

6893421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2297810.

The product of its digits is 10368, while the sum is 33.

The square root of 6893421 is about 2625.5325174143. The cubic root of 6893421 is about 190.3172999159.

The spelling of 6893421 in words is "six million, eight hundred ninety-three thousand, four hundred twenty-one".