66410123 has 8 divisors (see below), whose sum is σ = 71594208. Its totient is φ = 61236864.

The previous prime is 66410101. The next prime is 66410129. The reversal of 66410123 is 32101466.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66410123 - 2⁶ = 66410059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66410129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13811 + ... + 17987.

It is an arithmetic number, because the mean of its divisors is an integer number (8949276).

Almost surely, 2^66410123 is an apocalyptic number.

66410123 is a deficient number, since it is larger than the sum of its proper divisors (5184085).

66410123 is a wasteful number, since it uses less digits than its factorization.

66410123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5413.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 66410123 is about 8149.2406394706. The cubic root of 66410123 is about 404.9593476444.

Adding to 66410123 its reverse (32101466), we get a palindrome (98511589).

The spelling of 66410123 in words is "sixty-six million, four hundred ten thousand, one hundred twenty-three".