66284793 has 6 divisors (see below), whose sum is σ = 95744714. Its totient is φ = 44189856.

The previous prime is 66284773. The next prime is 66284839. The reversal of 66284793 is 39748266.

It can be written as a sum of positive squares in only one way, i.e., 65804544 + 480249 = 8112^2 + 693^2 .

It is a de Polignac number, because none of the positive numbers 2^k-66284793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66284773) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3682480 + ... + 3682497.

Almost surely, 2^66284793 is an apocalyptic number.

It is an amenable number.

66284793 is a deficient number, since it is larger than the sum of its proper divisors (29459921).

66284793 is a wasteful number, since it uses less digits than its factorization.

66284793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7364983 (or 7364980 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 66284793 is about 8141.5473345059. The cubic root of 66284793 is about 404.7044391363.

The spelling of 66284793 in words is "sixty-six million, two hundred eighty-four thousand, seven hundred ninety-three".