8684197378 has 8 divisors (see below), whose sum is σ = 13475478780. Its totient is φ = 4192371120.

The previous prime is 8684197367. The next prime is 8684197447. The reversal of 8684197378 is 8737914868.

It can be written as a sum of positive squares in 2 ways, for example, as 8344274409 + 339922969 = 91347^2 + 18437^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74863713 + ... + 74863828.

Almost surely, 2^8684197378 is an apocalyptic number.

8684197378 is a deficient number, since it is larger than the sum of its proper divisors (4791281402).

8684197378 is a wasteful number, since it uses less digits than its factorization.

8684197378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149727572.

The product of its digits is 16257024, while the sum is 61.

The square root of 8684197378 is about 93189.0410831660. The cubic root of 8684197378 is about 2055.4640966327.

The spelling of 8684197378 in words is "eight billion, six hundred eighty-four million, one hundred ninety-seven thousand, three hundred seventy-eight".