5678677778 has 8 divisors (see below), whose sum is σ = 8519488572. Its totient is φ = 2838848256.

The previous prime is 5678677769. The next prime is 5678677787. The reversal of 5678677778 is 8777768765.

It is an interprime number because it is at equal distance from previous prime (5678677769) and next prime (5678677787).

It can be written as a sum of positive squares in 2 ways, for example, as 3652147489 + 2026530289 = 60433^2 + 45017^2 .

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

It is a Curzon number.

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, 230675 + ... + 254102.

Almost surely, 2^5678677778 is an apocalyptic number.

5678677778 is a deficient number, since it is larger than the sum of its proper divisors (2840810794).

5678677778 is a wasteful number, since it uses less digits than its factorization.

5678677778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490636.

The product of its digits is 193616640, while the sum is 68.

The square root of 5678677778 is about 75357.0021829425. The cubic root of 5678677778 is about 1784.0858229289.

The spelling of 5678677778 in words is "five billion, six hundred seventy-eight million, six hundred seventy-seven thousand, seven hundred seventy-eight".