5673991678 has 4 divisors (see below), whose sum is σ = 8510987520. Its totient is φ = 2836995838.

The previous prime is 5673991663. The next prime is 5673991747. The reversal of 5673991678 is 8761993765.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1418497918 + ... + 1418497921.

It is an arithmetic number, because the mean of its divisors is an integer number (2127746880).

Almost surely, 2^5673991678 is an apocalyptic number.

5673991678 is a deficient number, since it is larger than the sum of its proper divisors (2836995842).

5673991678 is a wasteful number, since it uses less digits than its factorization.

5673991678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2836995841.

The product of its digits is 17146080, while the sum is 61.

The square root of 5673991678 is about 75325.9031011245. The cubic root of 5673991678 is about 1783.5949395665.

The spelling of 5673991678 in words is "five billion, six hundred seventy-three million, nine hundred ninety-one thousand, six hundred seventy-eight".