67368421 has 8 divisors (see below), whose sum is σ = 70675200. Its totient is φ = 64127280.

The previous prime is 67368419. The next prime is 67368443. The reversal of 67368421 is 12486376.

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 67368421 - 2¹ = 67368419 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 (67368481) by changing a digit.

It is a nontrivial repunit in base 20.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14301 + ... + 18418.

It is an arithmetic number, because the mean of its divisors is an integer number (8834400).

Almost surely, 2^67368421 is an apocalyptic number.

It is an amenable number.

67368421 is a deficient number, since it is larger than the sum of its proper divisors (3306779).

67368421 is a wasteful number, since it uses less digits than its factorization.

67368421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32819.

The product of its digits is 48384, while the sum is 37.

The square root of 67368421 is about 8207.8268134751. The cubic root of 67368421 is about 406.8979071705.

The spelling of 67368421 in words is "sixty-seven million, three hundred sixty-eight thousand, four hundred twenty-one".