66006244 has 6 divisors (see below), whose sum is σ = 115510934. Its totient is φ = 33003120.

The previous prime is 66006221. The next prime is 66006263. The reversal of 66006244 is 44260066.

It can be written as a sum of positive squares in only one way, i.e., 42094144 + 23912100 = 6488^2 + 4890^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8250777 + ... + 8250784.

Almost surely, 2^66006244 is an apocalyptic number.

It is an amenable number.

66006244 is a deficient number, since it is larger than the sum of its proper divisors (49504690).

66006244 is a wasteful number, since it uses less digits than its factorization.

66006244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16501565 (or 16501563 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 66006244 is about 8124.4226871821. The cubic root of 66006244 is about 404.1367458536.

The spelling of 66006244 in words is "sixty-six million, six thousand, two hundred forty-four".