8378613 has 16 divisors (see below), whose sum is σ = 12749760. Its totient is φ = 5434128.

The previous prime is 8378581. The next prime is 8378621. The reversal of 8378613 is 3168738.

8378613 is a `hidden beast` number, since 8 + 37 + 8 + 613 = 666.

It is not a de Polignac number, because 8378613 - 2⁵ = 8378581 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8378633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3195 + ... + 5192.

It is an arithmetic number, because the mean of its divisors is an integer number (796860).

Almost surely, 2^8378613 is an apocalyptic number.

It is an amenable number.

8378613 is a deficient number, since it is larger than the sum of its proper divisors (4371147).

8378613 is a wasteful number, since it uses less digits than its factorization.

8378613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8433 (or 8427 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 8378613 is about 2894.5833897126. The cubic root of 8378613 is about 203.1066035568.

The spelling of 8378613 in words is "eight million, three hundred seventy-eight thousand, six hundred thirteen".