993727666 has 8 divisors (see below), whose sum is σ = 1495679724. Its totient is φ = 495167760.

The previous prime is 993727663. The next prime is 993727667. The reversal of 993727666 is 666727399.

It can be written as a sum of positive squares in 2 ways, for example, as 819619641 + 174108025 = 28629^2 + 13195^2 .

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

It is a super-3 number, since 3×993727666³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (993727663) 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, 847305 + ... + 848476.

Almost surely, 2^993727666 is an apocalyptic number.

993727666 is a deficient number, since it is larger than the sum of its proper divisors (501952058).

993727666 is a wasteful number, since it uses less digits than its factorization.

993727666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1696076.

The product of its digits is 5143824, while the sum is 55.

The square root of 993727666 is about 31523.4462900236. The cubic root of 993727666 is about 997.9048353508.

The spelling of 993727666 in words is "nine hundred ninety-three million, seven hundred twenty-seven thousand, six hundred sixty-six".