6633993 has 8 divisors (see below), whose sum is σ = 8867488. Its totient is φ = 4411584.

The previous prime is 6633967. The next prime is 6634009. The reversal of 6633993 is 3993366.

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

It is not a de Polignac number, because 6633993 - 2¹² = 6629897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6633293) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1255 + ... + 3852.

It is an arithmetic number, because the mean of its divisors is an integer number (1108436).

Almost surely, 2^6633993 is an apocalyptic number.

It is an amenable number.

6633993 is a deficient number, since it is larger than the sum of its proper divisors (2233495).

6633993 is a wasteful number, since it uses less digits than its factorization.

6633993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5543.

The product of its digits is 78732, while the sum is 39.

The square root of 6633993 is about 2575.6538975569. The cubic root of 6633993 is about 187.8992311185.

It can be divided in two parts, 6633 and 993, that added together give a triangular number (7626 = T₁₂₃).

The spelling of 6633993 in words is "six million, six hundred thirty-three thousand, nine hundred ninety-three".