8199645 has 8 divisors (see below), whose sum is σ = 13119456. Its totient is φ = 4373136.

The previous prime is 8199641. The next prime is 8199649. The reversal of 8199645 is 5469918.

8199645 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (8199641) and next prime (8199649).

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

It is not a de Polignac number, because 8199645 - 2² = 8199641 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 8199597 and 8199606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8199641) 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, 273307 + ... + 273336.

It is an arithmetic number, because the mean of its divisors is an integer number (1639932).

Almost surely, 2^8199645 is an apocalyptic number.

It is an amenable number.

8199645 is a deficient number, since it is larger than the sum of its proper divisors (4919811).

8199645 is a wasteful number, since it uses less digits than its factorization.

8199645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546651.

The product of its digits is 77760, while the sum is 42.

The square root of 8199645 is about 2863.5022262956. The cubic root of 8199645 is about 201.6500574472.

The spelling of 8199645 in words is "eight million, one hundred ninety-nine thousand, six hundred forty-five".