9872066 has 4 divisors (see below), whose sum is σ = 14808102. Its totient is φ = 4936032.

The previous prime is 9872063. The next prime is 9872089. The reversal of 9872066 is 6602789.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 9174841 + 697225 = 3029^2 + 835^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9872063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2468015 + ... + 2468018.

Almost surely, 2^9872066 is an apocalyptic number.

9872066 is a deficient number, since it is larger than the sum of its proper divisors (4936036).

9872066 is a wasteful number, since it uses less digits than its factorization.

9872066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4936035.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 9872066 is about 3141.9844047990. The cubic root of 9872066 is about 214.5207714393.

The spelling of 9872066 in words is "nine million, eight hundred seventy-two thousand, sixty-six".