8642505 has 8 divisors (see below), whose sum is σ = 13828032. Its totient is φ = 4609328.

The previous prime is 8642489. The next prime is 8642507. The reversal of 8642505 is 5052468.

8642505 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8642505 - 2⁴ = 8642489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8642507) 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, 288069 + ... + 288098.

It is an arithmetic number, because the mean of its divisors is an integer number (1728504).

Almost surely, 2^8642505 is an apocalyptic number.

It is an amenable number.

8642505 is a deficient number, since it is larger than the sum of its proper divisors (5185527).

8642505 is a wasteful number, since it uses less digits than its factorization.

8642505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576175.

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 8642505 is about 2939.8137696119. The cubic root of 8642505 is about 205.2169426560.

The spelling of 8642505 in words is "eight million, six hundred forty-two thousand, five hundred five".