6740393 has 4 divisors (see below), whose sum is σ = 7353168. Its totient is φ = 6127620.

The previous prime is 6740389. The next prime is 6740399. The reversal of 6740393 is 3930476.

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 a cyclic number.

It is not a de Polignac number, because 6740393 - 2² = 6740389 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6740399) 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, 306371 + ... + 306392.

It is an arithmetic number, because the mean of its divisors is an integer number (1838292).

Almost surely, 2^6740393 is an apocalyptic number.

It is an amenable number.

6740393 is a deficient number, since it is larger than the sum of its proper divisors (612775).

6740393 is a wasteful number, since it uses less digits than its factorization.

6740393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612774.

The product of its (nonzero) digits is 13608, while the sum is 32.

The square root of 6740393 is about 2596.2266850181. The cubic root of 6740393 is about 188.8984551992.

The spelling of 6740393 in words is "six million, seven hundred forty thousand, three hundred ninety-three".