66284704 has 12 divisors (see below), whose sum is σ = 130498074. Its totient is φ = 33142336.

The previous prime is 66284693. The next prime is 66284707. The reversal of 66284704 is 40748266.

It can be written as a sum of positive squares in only one way, i.e., 34339600 + 31945104 = 5860^2 + 5652^2 .

It is not an unprimeable number, because it can be changed into a prime (66284707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1035667 + ... + 1035730.

Almost surely, 2^66284704 is an apocalyptic number.

It is an amenable number.

66284704 is a deficient number, since it is larger than the sum of its proper divisors (64213370).

66284704 is a wasteful number, since it uses less digits than its factorization.

66284704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2071407 (or 2071399 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 37.

The square root of 66284704 is about 8141.5418687126. The cubic root of 66284704 is about 404.7042580052.

The spelling of 66284704 in words is "sixty-six million, two hundred eighty-four thousand, seven hundred four".