66066242 has 12 divisors (see below), whose sum is σ = 108927798. Its totient is φ = 30030000.

The previous prime is 66066229. The next prime is 66066311. The reversal of 66066242 is 24266066.

It can be written as a sum of positive squares in only one way, i.e., 39450961 + 26615281 = 6281^2 + 5159^2 .

It is a junction number, because it is equal to n+sod(n) for n = 66066199 and 66066208.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 136259 + ... + 136742.

Almost surely, 2^66066242 is an apocalyptic number.

66066242 is a deficient number, since it is larger than the sum of its proper divisors (42861556).

66066242 is a wasteful number, since it uses less digits than its factorization.

66066242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273025 (or 273014 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 66066242 is about 8128.1142954562. The cubic root of 66066242 is about 404.2591587849.

The spelling of 66066242 in words is "sixty-six million, sixty-six thousand, two hundred forty-two".