8047678667 has 4 divisors (see below), whose sum is σ = 9197347056. Its totient is φ = 6898010280.

The previous prime is 8047678643. The next prime is 8047678711. The reversal of 8047678667 is 7668767408.

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

It is not a de Polignac number, because 8047678667 - 2³² = 3752711371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8047678567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 574834184 + ... + 574834197.

It is an arithmetic number, because the mean of its divisors is an integer number (2299336764).

Almost surely, 2^8047678667 is an apocalyptic number.

8047678667 is a deficient number, since it is larger than the sum of its proper divisors (1149668389).

8047678667 is a wasteful number, since it uses less digits than its factorization.

8047678667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1149668388.

The product of its (nonzero) digits is 18966528, while the sum is 59.

The square root of 8047678667 is about 89708.8550088563. The cubic root of 8047678667 is about 2003.9653550338.

The spelling of 8047678667 in words is "eight billion, forty-seven million, six hundred seventy-eight thousand, six hundred sixty-seven".