16666036 has 6 divisors (see below), whose sum is σ = 29165570. Its totient is φ = 8333016.

The previous prime is 16666033. The next prime is 16666037. The reversal of 16666036 is 63066661.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 10692900 + 5973136 = 3270^2 + 2444^2 .

It is a junction number, because it is equal to n+sod(n) for n = 16665992 and 16666010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16666033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2083251 + ... + 2083258.

Almost surely, 2^16666036 is an apocalyptic number.

It is an amenable number.

16666036 is a deficient number, since it is larger than the sum of its proper divisors (12499534).

16666036 is a wasteful number, since it uses less digits than its factorization.

16666036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4166513 (or 4166511 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 34.

The square root of 16666036 is about 4082.4056633314. The cubic root of 16666036 is about 255.4332555184.

The spelling of 16666036 in words is "sixteen million, six hundred sixty-six thousand, thirty-six".