66421341 has 24 divisors (see below), whose sum is σ = 109933824. Its totient is φ = 37856160.

The previous prime is 66421307. The next prime is 66421343. The reversal of 66421341 is 14312466.

66421341 is a `hidden beast` number, since 6 + 642 + 13 + 4 + 1 = 666.

It is not a de Polignac number, because 66421341 - 2⁹ = 66420829 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66421343) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27900 + ... + 30186.

It is an arithmetic number, because the mean of its divisors is an integer number (4580576).

Almost surely, 2^66421341 is an apocalyptic number.

It is an amenable number.

66421341 is a deficient number, since it is larger than the sum of its proper divisors (43512483).

66421341 is a wasteful number, since it uses less digits than its factorization.

66421341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2761 (or 2758 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 66421341 is about 8149.9288953953. The cubic root of 66421341 is about 404.9821482758.

The spelling of 66421341 in words is "sixty-six million, four hundred twenty-one thousand, three hundred forty-one".