5655610666 has 8 divisors (see below), whose sum is σ = 8496611424. Its totient is φ = 2823406860.

The previous prime is 5655610663. The next prime is 5655610673. The reversal of 5655610666 is 6660165565.

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

It is not an unprimeable number, because it can be changed into a prime (5655610663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2197630 + ... + 2200201.

It is an arithmetic number, because the mean of its divisors is an integer number (1062076428).

Almost surely, 2^5655610666 is an apocalyptic number.

5655610666 is a deficient number, since it is larger than the sum of its proper divisors (2841000758).

5655610666 is a wasteful number, since it uses less digits than its factorization.

5655610666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4398476.

The product of its (nonzero) digits is 972000, while the sum is 46.

The square root of 5655610666 is about 75203.7942260894. The cubic root of 5655610666 is about 1781.6668586267. Note that the first 3 decimals are identical.

The spelling of 5655610666 in words is "five billion, six hundred fifty-five million, six hundred ten thousand, six hundred sixty-six".