8384645 has 8 divisors (see below), whose sum is σ = 10080504. Its totient is φ = 6695104.

The previous prime is 8384641. The next prime is 8384671. The reversal of 8384645 is 5464838.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3290596 + 5094049 = 1814^2 + 2257^2 .

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 8384645 - 2² = 8384641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8384599 and 8384608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8384641) 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, 2147 + ... + 4623.

It is an arithmetic number, because the mean of its divisors is an integer number (1260063).

Almost surely, 2^8384645 is an apocalyptic number.

It is an amenable number.

8384645 is a deficient number, since it is larger than the sum of its proper divisors (1695859).

8384645 is a wasteful number, since it uses less digits than its factorization.

8384645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3159.

The product of its digits is 92160, while the sum is 38.

The square root of 8384645 is about 2895.6251483920. The cubic root of 8384645 is about 203.1553325905.

The spelling of 8384645 in words is "eight million, three hundred eighty-four thousand, six hundred forty-five".