5638666682 has 8 divisors (see below), whose sum is σ = 9226909152. Its totient is φ = 2563030300.

The previous prime is 5638666681. The next prime is 5638666697. The reversal of 5638666682 is 2866668365.

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 (5638666681) 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, 128151494 + ... + 128151537.

It is an arithmetic number, because the mean of its divisors is an integer number (1153363644).

Almost surely, 2^5638666682 is an apocalyptic number.

5638666682 is a deficient number, since it is larger than the sum of its proper divisors (3588242470).

5638666682 is a wasteful number, since it uses less digits than its factorization.

5638666682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256303044.

The product of its digits is 14929920, while the sum is 56.

The square root of 5638666682 is about 75091.0559387734. The cubic root of 5638666682 is about 1779.8858111742.

The spelling of 5638666682 in words is "five billion, six hundred thirty-eight million, six hundred sixty-six thousand, six hundred eighty-two".