66244123 has 12 divisors (see below), whose sum is σ = 74008728. Its totient is φ = 58803360.

The previous prime is 66244111. The next prime is 66244159. The reversal of 66244123 is 32144266.

It is a de Polignac number, because none of the positive numbers 2^k-66244123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66244091 and 66244100.

It is not an unprimeable number, because it can be changed into a prime (66242123) 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, 18711 + ... + 21967.

It is an arithmetic number, because the mean of its divisors is an integer number (6167394).

Almost surely, 2^66244123 is an apocalyptic number.

66244123 is a deficient number, since it is larger than the sum of its proper divisors (7764605).

66244123 is a wasteful number, since it uses less digits than its factorization.

66244123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3354 (or 3311 counting only the distinct ones).

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

The square root of 66244123 is about 8139.0492688028. The cubic root of 66244123 is about 404.6216514348.

Adding to 66244123 its reverse (32144266), we get a palindrome (98388389).

The spelling of 66244123 in words is "sixty-six million, two hundred forty-four thousand, one hundred twenty-three".