6557393 has 16 divisors (see below), whose sum is σ = 7361280. Its totient is φ = 5811456.

The previous prime is 6557381. The next prime is 6557401. The reversal of 6557393 is 3937556.

It is not a de Polignac number, because 6557393 - 2¹⁰ = 6556369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6557303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23030 + ... + 23312.

It is an arithmetic number, because the mean of its divisors is an integer number (460080).

Almost surely, 2^6557393 is an apocalyptic number.

It is an amenable number.

6557393 is a deficient number, since it is larger than the sum of its proper divisors (803887).

6557393 is a wasteful number, since it uses less digits than its factorization.

6557393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376.

The product of its digits is 85050, while the sum is 38.

The square root of 6557393 is about 2560.7407131531. The cubic root of 6557393 is about 187.1732311451.

The spelling of 6557393 in words is "six million, five hundred fifty-seven thousand, three hundred ninety-three".