6625993 has 8 divisors (see below), whose sum is σ = 7249536. Its totient is φ = 6006000.

The previous prime is 6625987. The next prime is 6626029. The reversal of 6625993 is 3995266.

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

It is not a de Polignac number, because 6625993 - 2⁹ = 6625481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6625943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4443 + ... + 5743.

It is an arithmetic number, because the mean of its divisors is an integer number (906192).

Almost surely, 2^6625993 is an apocalyptic number.

It is an amenable number.

6625993 is a deficient number, since it is larger than the sum of its proper divisors (623543).

6625993 is a wasteful number, since it uses less digits than its factorization.

6625993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1775.

The product of its digits is 87480, while the sum is 40.

The square root of 6625993 is about 2574.1004253914. The cubic root of 6625993 is about 187.8236708693.

The spelling of 6625993 in words is "six million, six hundred twenty-five thousand, nine hundred ninety-three".