5666777784 has 48 divisors (see below), whose sum is σ = 15368324400. Its totient is φ = 1886365824.

The previous prime is 5666777777. The next prime is 5666777801. The reversal of 5666777784 is 4877776665.

It is a happy number.

It is a super-2 number, since 2×5666777784² = 64224740906471901312, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 532 + ... + 106460.

It is an arithmetic number, because the mean of its divisors is an integer number (320173425).

Almost surely, 2^5666777784 is an apocalyptic number.

It is an amenable number.

5666777784 is an abundant number, since it is smaller than the sum of its proper divisors (9701546616).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5666777784 is a wasteful number, since it uses less digits than its factorization.

5666777784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106684 (or 106677 counting only the distinct ones).

The product of its digits is 82978560, while the sum is 63.

The square root of 5666777784 is about 75278.0033210233. The cubic root of 5666777784 is about 1782.8387334541.

The spelling of 5666777784 in words is "five billion, six hundred sixty-six million, seven hundred seventy-seven thousand, seven hundred eighty-four".