5666616654 has 16 divisors (see below), whose sum is σ = 11333976960. Its totient is φ = 1888748280.

The previous prime is 5666616649. The next prime is 5666616661. The reversal of 5666616654 is 4566166665.

It is a super-2 number, since 2×5666616654² = 64221088606780311432, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 5666616597 and 5666616606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144717 + ... + 179655.

It is an arithmetic number, because the mean of its divisors is an integer number (708373560).

Almost surely, 2^5666616654 is an apocalyptic number.

5666616654 is an abundant number, since it is smaller than the sum of its proper divisors (5667360306).

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

5666616654 is a wasteful number, since it uses less digits than its factorization.

5666616654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61975.

The product of its digits is 4665600, while the sum is 51.

The square root of 5666616654 is about 75276.9330804596. The cubic root of 5666616654 is about 1782.8218354602.

The spelling of 5666616654 in words is "five billion, six hundred sixty-six million, six hundred sixteen thousand, six hundred fifty-four".