66066256 has 10 divisors (see below), whose sum is σ = 128003402. Its totient is φ = 33033120.

The previous prime is 66066229. The next prime is 66066311. The reversal of 66066256 is 65266066.

It can be written as a sum of positive squares in only one way, i.e., 60590656 + 5475600 = 7784^2 + 2340^2 .

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, 2064555 + ... + 2064586.

Almost surely, 2^66066256 is an apocalyptic number.

It is an amenable number.

66066256 is a deficient number, since it is larger than the sum of its proper divisors (61937146).

66066256 is a wasteful number, since it uses less digits than its factorization.

66066256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4129149 (or 4129143 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 37.

The square root of 66066256 is about 8128.1151566646. The cubic root of 66066256 is about 404.2591873402.

The spelling of 66066256 in words is "sixty-six million, sixty-six thousand, two hundred fifty-six".