8723945 has 16 divisors (see below), whose sum is σ = 11119680. Its totient is φ = 6552000.

The previous prime is 8723933. The next prime is 8723947. The reversal of 8723945 is 5493278.

8723945 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8723945 - 2⁴ = 8723929 is a prime.

It is a super-2 number, since 2×8723945² = 152214432726050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 8723899 and 8723908.

It is not an unprimeable number, because it can be changed into a prime (8723947) 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, 12095 + ... + 12795.

It is an arithmetic number, because the mean of its divisors is an integer number (694980).

Almost surely, 2^8723945 is an apocalyptic number.

It is an amenable number.

8723945 is a deficient number, since it is larger than the sum of its proper divisors (2395735).

8723945 is a wasteful number, since it uses less digits than its factorization.

8723945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856.

The product of its digits is 60480, while the sum is 38.

The square root of 8723945 is about 2953.6325093010. The cubic root of 8723945 is about 205.8595281379.

The spelling of 8723945 in words is "eight million, seven hundred twenty-three thousand, nine hundred forty-five".