66463243 has 24 divisors (see below), whose sum is σ = 84268800. Its totient is φ = 51308400.

The previous prime is 66463231. The next prime is 66463247. The reversal of 66463243 is 34236466.

It is not a de Polignac number, because 66463243 - 2⁹ = 66462731 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66463199 and 66463208.

It is not an unprimeable number, because it can be changed into a prime (66463247) 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, 110658 + ... + 111256.

It is an arithmetic number, because the mean of its divisors is an integer number (3511200).

Almost surely, 2^66463243 is an apocalyptic number.

66463243 is a deficient number, since it is larger than the sum of its proper divisors (17805557).

66463243 is a wasteful number, since it uses less digits than its factorization.

66463243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 759 (or 748 counting only the distinct ones).

The product of its digits is 62208, while the sum is 34.

The square root of 66463243 is about 8152.4991873658. The cubic root of 66463243 is about 405.0672915673.

It can be divided in two parts, 6646 and 3243, that added together give a palindrome (9889).

The spelling of 66463243 in words is "sixty-six million, four hundred sixty-three thousand, two hundred forty-three".