66028084 has 6 divisors (see below), whose sum is σ = 115549154. Its totient is φ = 33014040.

The previous prime is 66028063. The next prime is 66028093. The reversal of 66028084 is 48082066.

It can be written as a sum of positive squares in only one way, i.e., 58064400 + 7963684 = 7620^2 + 2822^2 .

It is a super-2 number, since 2×66028084² = 8719415753422112, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8253507 + ... + 8253514.

Almost surely, 2^66028084 is an apocalyptic number.

It is an amenable number.

66028084 is a deficient number, since it is larger than the sum of its proper divisors (49521070).

66028084 is a wasteful number, since it uses less digits than its factorization.

66028084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16507025 (or 16507023 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 66028084 is about 8125.7666715209. The cubic root of 66028084 is about 404.1813142292.

The spelling of 66028084 in words is "sixty-six million, twenty-eight thousand, eighty-four".