66113243 has 8 divisors (see below), whose sum is σ = 78163680. Its totient is φ = 54714240.

The previous prime is 66113239. The next prime is 66113251. The reversal of 66113243 is 34231166.

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

It is not a de Polignac number, because 66113243 - 2² = 66113239 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66113143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162638 + ... + 163043.

It is an arithmetic number, because the mean of its divisors is an integer number (9770460).

Almost surely, 2^66113243 is an apocalyptic number.

66113243 is a deficient number, since it is larger than the sum of its proper divisors (12050437).

66113243 is a wasteful number, since it uses less digits than its factorization.

66113243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325717.

The product of its digits is 2592, while the sum is 26.

The square root of 66113243 is about 8131.0050424286. The cubic root of 66113243 is about 404.3550023913.

The spelling of 66113243 in words is "sixty-six million, one hundred thirteen thousand, two hundred forty-three".