6507993 has 4 divisors (see below), whose sum is σ = 8677328. Its totient is φ = 4338660.

The previous prime is 6507989. The next prime is 6507997. The reversal of 6507993 is 3997056.

6507993 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (6507989) and next prime (6507997).

It is not a de Polignac number, because 6507993 - 2² = 6507989 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6507997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1084663 + ... + 1084668.

It is an arithmetic number, because the mean of its divisors is an integer number (2169332).

Almost surely, 2^6507993 is an apocalyptic number.

It is an amenable number.

6507993 is a deficient number, since it is larger than the sum of its proper divisors (2169335).

6507993 is a wasteful number, since it uses less digits than its factorization.

6507993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2169334.

The product of its (nonzero) digits is 51030, while the sum is 39.

The square root of 6507993 is about 2551.0768314576. The cubic root of 6507993 is about 186.7020238438.

The spelling of 6507993 in words is "six million, five hundred seven thousand, nine hundred ninety-three".