66434211 has 12 divisors (see below), whose sum is σ = 96098080. Its totient is φ = 44226000.

The previous prime is 66434197. The next prime is 66434213. The reversal of 66434211 is 11243466.

66434211 is a `hidden beast` number, since 6 + 643 + 4 + 2 + 11 = 666.

It is not a de Polignac number, because 66434211 - 2⁹ = 66433699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66434213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1845 + ... + 11673.

Almost surely, 2^66434211 is an apocalyptic number.

66434211 is a deficient number, since it is larger than the sum of its proper divisors (29663869).

66434211 is a wasteful number, since it uses less digits than its factorization.

66434211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10586 (or 10583 counting only the distinct ones).

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

The square root of 66434211 is about 8150.7184345921. The cubic root of 66434211 is about 405.0083034420.

Adding to 66434211 its reverse (11243466), we get a palindrome (77677677).

The spelling of 66434211 in words is "sixty-six million, four hundred thirty-four thousand, two hundred eleven".