66112423 has 4 divisors (see below), whose sum is σ = 71198008. Its totient is φ = 61026840.

The previous prime is 66112379. The next prime is 66112433. The reversal of 66112423 is 32421166.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 66112423 - 2⁹ = 66111911 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 (66112433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2542773 + ... + 2542798.

It is an arithmetic number, because the mean of its divisors is an integer number (17799502).

Almost surely, 2^66112423 is an apocalyptic number.

66112423 is a deficient number, since it is larger than the sum of its proper divisors (5085585).

66112423 is a wasteful number, since it uses less digits than its factorization.

66112423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5085584.

The product of its digits is 1728, while the sum is 25.

The square root of 66112423 is about 8130.9546180015. The cubic root of 66112423 is about 404.3533306512.

Adding to 66112423 its reverse (32421166), we get a palindrome (98533589).

The spelling of 66112423 in words is "sixty-six million, one hundred twelve thousand, four hundred twenty-three".