66342845 has 8 divisors (see below), whose sum is σ = 80961120. Its totient is φ = 52174480.

The previous prime is 66342839. The next prime is 66342863. The reversal of 66342845 is 54824366.

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

It is not a de Polignac number, because 66342845 - 2⁶ = 66342781 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 66342799 and 66342808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112151 + ... + 112740.

It is an arithmetic number, because the mean of its divisors is an integer number (10120140).

Almost surely, 2^66342845 is an apocalyptic number.

It is an amenable number.

66342845 is a deficient number, since it is larger than the sum of its proper divisors (14618275).

66342845 is a wasteful number, since it uses less digits than its factorization.

66342845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224955.

The product of its digits is 138240, while the sum is 38.

The square root of 66342845 is about 8145.1117242184. Note that the first 3 decimals coincide. The cubic root of 66342845 is about 404.8225509271.

The spelling of 66342845 in words is "sixty-six million, three hundred forty-two thousand, eight hundred forty-five".