5549950666 has 8 divisors (see below), whose sum is σ = 8965304964. Its totient is φ = 2561515680.

The previous prime is 5549950657. The next prime is 5549950667. The reversal of 5549950666 is 6660599455.

It can be written as a sum of positive squares in 2 ways, for example, as 5456924641 + 93026025 = 73871^2 + 9645^2 .

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 (5549950667) 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, 106729795 + ... + 106729846.

Almost surely, 2^5549950666 is an apocalyptic number.

5549950666 is a deficient number, since it is larger than the sum of its proper divisors (3415354298).

5549950666 is a wasteful number, since it uses less digits than its factorization.

5549950666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213459656.

The product of its (nonzero) digits is 8748000, while the sum is 55.

The square root of 5549950666 is about 74497.9910198926. The cubic root of 5549950666 is about 1770.5018065013.

The spelling of 5549950666 in words is "five billion, five hundred forty-nine million, nine hundred fifty thousand, six hundred sixty-six".