5666778393 has 8 divisors (see below), whose sum is σ = 7799437056. Its totient is φ = 3655986000.

The previous prime is 5666778361. The next prime is 5666778407. The reversal of 5666778393 is 3938776665.

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

It is not a de Polignac number, because 5666778393 - 2⁵ = 5666778361 is a prime.

It is a super-2 number, since 2×5666778393² = 64224754710743324898, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5666778493) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30466458 + ... + 30466643.

It is an arithmetic number, because the mean of its divisors is an integer number (974929632).

Almost surely, 2^5666778393 is an apocalyptic number.

It is an amenable number.

5666778393 is a deficient number, since it is larger than the sum of its proper divisors (2132658663).

5666778393 is a wasteful number, since it uses less digits than its factorization.

5666778393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60933135.

The product of its digits is 34292160, while the sum is 60.

The square root of 5666778393 is about 75278.0073660296. The cubic root of 5666778393 is about 1782.8387973204.

The spelling of 5666778393 in words is "five billion, six hundred sixty-six million, seven hundred seventy-eight thousand, three hundred ninety-three".