8666745 has 16 divisors (see below), whose sum is σ = 14470272. Its totient is φ = 4421120.

The previous prime is 8666711. The next prime is 8666747. The reversal of 8666745 is 5476668.

8666745 = T₅₉₈ + T₅₉₉ + ... + T₆₄₂.

It is a happy number.

8666745 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8666745 - 2⁶ = 8666681 is a prime.

It is a super-2 number, since 2×8666745² = 150224937790050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 8666697 and 8666706.

It is not an unprimeable number, because it can be changed into a prime (8666747) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12216 + ... + 12905.

It is an arithmetic number, because the mean of its divisors is an integer number (904392).

Almost surely, 2^8666745 is an apocalyptic number.

It is an amenable number.

8666745 is a deficient number, since it is larger than the sum of its proper divisors (5803527).

8666745 is a wasteful number, since it uses less digits than its factorization.

8666745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25152.

The product of its digits is 241920, while the sum is 42.

The square root of 8666745 is about 2943.9335930010. The cubic root of 8666745 is about 205.4086237806.

The spelling of 8666745 in words is "eight million, six hundred sixty-six thousand, seven hundred forty-five".