66411423 has 36 divisors (see below), whose sum is σ = 106198560. Its totient is φ = 39955968.

The previous prime is 66411409. The next prime is 66411427. The reversal of 66411423 is 32411466.

66411423 is a `hidden beast` number, since 6 + 641 + 14 + 2 + 3 = 666.

It is not a de Polignac number, because 66411423 - 2¹⁶ = 66345887 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66411427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 71023 + ... + 71951.

It is an arithmetic number, because the mean of its divisors is an integer number (2949960).

Almost surely, 2^66411423 is an apocalyptic number.

66411423 is a deficient number, since it is larger than the sum of its proper divisors (39787137).

66411423 is a wasteful number, since it uses less digits than its factorization.

66411423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1008 (or 992 counting only the distinct ones).

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

The square root of 66411423 is about 8149.3204011132. The cubic root of 66411423 is about 404.9619900313.

Adding to 66411423 its reverse (32411466), we get a palindrome (98822889).

The spelling of 66411423 in words is "sixty-six million, four hundred eleven thousand, four hundred twenty-three".