66885243 has 8 divisors (see below), whose sum is σ = 89633808. Its totient is φ = 44363424.

The previous prime is 66885211. The next prime is 66885349. The reversal of 66885243 is 34258866.

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

It is not a de Polignac number, because 66885243 - 2⁵ = 66885211 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66885195 and 66885204.

It is not an unprimeable number, because it can be changed into a prime (66885743) 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, 55996 + ... + 57177.

It is an arithmetic number, because the mean of its divisors is an integer number (11204226).

Almost surely, 2^66885243 is an apocalyptic number.

66885243 is a deficient number, since it is larger than the sum of its proper divisors (22748565).

66885243 is a wasteful number, since it uses less digits than its factorization.

66885243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113373.

The product of its digits is 276480, while the sum is 42.

The square root of 66885243 is about 8178.3398682129. The cubic root of 66885243 is about 405.9227914205.

The spelling of 66885243 in words is "sixty-six million, eight hundred eighty-five thousand, two hundred forty-three".