66541123 has 12 divisors (see below), whose sum is σ = 73439784. Its totient is φ = 59792000.

The previous prime is 66541103. The next prime is 66541141. The reversal of 66541123 is 32114566.

It is a de Polignac number, because none of the positive numbers 2^k-66541123 is a prime.

It is a super-2 number, since 2×66541123² = 8855442100202258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 66541091 and 66541100.

It is not an unprimeable number, because it can be changed into a prime (66541103) 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, 111915 + ... + 112507.

It is an arithmetic number, because the mean of its divisors is an integer number (6119982).

Almost surely, 2^66541123 is an apocalyptic number.

66541123 is a deficient number, since it is larger than the sum of its proper divisors (6898661).

66541123 is a wasteful number, since it uses less digits than its factorization.

66541123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806 (or 705 counting only the distinct ones).

The product of its digits is 4320, while the sum is 28.

The square root of 66541123 is about 8157.2742383715. The cubic root of 66541123 is about 405.2254457861.

Adding to 66541123 its reverse (32114566), we get a palindrome (98655689).

It can be divided in two parts, 6654 and 1123, that added together give a palindrome (7777).

The spelling of 66541123 in words is "sixty-six million, five hundred forty-one thousand, one hundred twenty-three".