8666772 has 24 divisors (see below), whose sum is σ = 20605536. Its totient is φ = 2834208.

The previous prime is 8666767. The next prime is 8666773. The reversal of 8666772 is 2776668.

It is a super-2 number, since 2×8666772² = 150225873799968, which contains 22 as substring.

It is a d-powerful number, because it can be written as 8⁷ + 6² + 6³ + 6⁷ + 7³ + 7⁸ + 2¹⁹ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8666773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6178 + ... + 7449.

It is an arithmetic number, because the mean of its divisors is an integer number (858564).

Almost surely, 2^8666772 is an apocalyptic number.

It is an amenable number.

8666772 is an abundant number, since it is smaller than the sum of its proper divisors (11938764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8666772 is a wasteful number, since it uses less digits than its factorization.

8666772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13687 (or 13685 counting only the distinct ones).

The product of its digits is 169344, while the sum is 42.

The square root of 8666772 is about 2943.9381786987. The cubic root of 8666772 is about 205.4088370874.

The spelling of 8666772 in words is "eight million, six hundred sixty-six thousand, seven hundred seventy-two".