66412423 has 24 divisors (see below), whose sum is σ = 84460320. Its totient is φ = 51110400.

The previous prime is 66412397. The next prime is 66412433. The reversal of 66412423 is 32421466.

It is a de Polignac number, because none of the positive numbers 2^k-66412423 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66412391 and 66412400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66412433) 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, 74943 + ... + 75823.

It is an arithmetic number, because the mean of its divisors is an integer number (3519180).

Almost surely, 2^66412423 is an apocalyptic number.

66412423 is a deficient number, since it is larger than the sum of its proper divisors (18047897).

66412423 is a wasteful number, since it uses less digits than its factorization.

66412423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 999 (or 988 counting only the distinct ones).

The product of its digits is 6912, while the sum is 28.

The square root of 66412423 is about 8149.3817556917. The cubic root of 66412423 is about 404.9640226132.

Adding to 66412423 its reverse (32421466), we get a palindrome (98833889).

The spelling of 66412423 in words is "sixty-six million, four hundred twelve thousand, four hundred twenty-three".