66282785 has 8 divisors (see below), whose sum is σ = 79583040. Its totient is φ = 52997104.

The previous prime is 66282781. The next prime is 66282833. The reversal of 66282785 is 58728266.

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

It is a cyclic number.

It is not a de Polignac number, because 66282785 - 2² = 66282781 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66282781) 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, 16286 + ... + 19944.

It is an arithmetic number, because the mean of its divisors is an integer number (9947880).

Almost surely, 2^66282785 is an apocalyptic number.

It is an amenable number.

66282785 is a deficient number, since it is larger than the sum of its proper divisors (13300255).

66282785 is a wasteful number, since it uses less digits than its factorization.

66282785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7287.

The product of its digits is 322560, while the sum is 44.

The square root of 66282785 is about 8141.4240154902. The cubic root of 66282785 is about 404.7003524538.

The spelling of 66282785 in words is "sixty-six million, two hundred eighty-two thousand, seven hundred eighty-five".