5667984778 has 8 divisors (see below), whose sum is σ = 8503564068. Its totient is φ = 2833463424.

The previous prime is 5667984767. The next prime is 5667984793. The reversal of 5667984778 is 8774897665.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5201727129 + 466257649 = 72123^2 + 21593^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 250951 + ... + 272602.

Almost surely, 2^5667984778 is an apocalyptic number.

5667984778 is a deficient number, since it is larger than the sum of its proper divisors (2835579290).

5667984778 is a wasteful number, since it uses less digits than its factorization.

5667984778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528968.

The product of its digits is 142248960, while the sum is 67.

The square root of 5667984778 is about 75286.0198044763. The cubic root of 5667984778 is about 1782.9653029071.

The spelling of 5667984778 in words is "five billion, six hundred sixty-seven million, nine hundred eighty-four thousand, seven hundred seventy-eight".