6894286421 has 8 divisors (see below), whose sum is σ = 7525425504. Its totient is φ = 6263878320.

The previous prime is 6894286391. The next prime is 6894286423. The reversal of 6894286421 is 1246824986.

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 6894286421 - 2²² = 6890092117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 6894286421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6894286423) 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, 162926 + ... + 200831.

It is an arithmetic number, because the mean of its divisors is an integer number (940678188).

Almost surely, 2^6894286421 is an apocalyptic number.

It is an amenable number.

6894286421 is a deficient number, since it is larger than the sum of its proper divisors (631139083).

6894286421 is a wasteful number, since it uses less digits than its factorization.

6894286421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365491.

The product of its digits is 1327104, while the sum is 50.

The square root of 6894286421 is about 83031.8398025721. The cubic root of 6894286421 is about 1903.2526391982.

The spelling of 6894286421 in words is "six billion, eight hundred ninety-four million, two hundred eighty-six thousand, four hundred twenty-one".