8378705 has 8 divisors (see below), whose sum is σ = 10645992. Its totient is φ = 6308608.

The previous prime is 8378683. The next prime is 8378707. The reversal of 8378705 is 5078738.

It can be written as a sum of positive squares in 4 ways, for example, as 633616 + 7745089 = 796^2 + 2783^2 .

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 8378705 - 2⁶ = 8378641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8378707) 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, 49202 + ... + 49371.

It is an arithmetic number, because the mean of its divisors is an integer number (1330749).

Almost surely, 2^8378705 is an apocalyptic number.

8378705 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

8378705 is a deficient number, since it is larger than the sum of its proper divisors (2267287).

8378705 is a wasteful number, since it uses less digits than its factorization.

8378705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98595.

The product of its (nonzero) digits is 47040, while the sum is 38.

The square root of 8378705 is about 2894.5992814205. The cubic root of 8378705 is about 203.1073469471.

The spelling of 8378705 in words is "eight million, three hundred seventy-eight thousand, seven hundred five".