8499645 has 72 divisors (see below), whose sum is σ = 18590208. Its totient is φ = 3516480.

The previous prime is 8499641. The next prime is 8499653. The reversal of 8499645 is 5469948.

It is a happy number.

8499645 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 8499645 - 2² = 8499641 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 8499645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8499641) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 38004 + ... + 38226.

Almost surely, 2^8499645 is an apocalyptic number.

It is an amenable number.

8499645 is an abundant number, since it is smaller than the sum of its proper divisors (10090563).

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

8499645 is a wasteful number, since it uses less digits than its factorization.

8499645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263 (or 249 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 8499645 is about 2915.4150647892. The cubic root of 8499645 is about 204.0799139042.

8499645 divided by its sum of digits (45) gives a palindrome (188881).

The spelling of 8499645 in words is "eight million, four hundred ninety-nine thousand, six hundred forty-five".