6557983 has 8 divisors (see below), whose sum is σ = 6926720. Its totient is φ = 6191640.

The previous prime is 6557981. The next prime is 6558007. The reversal of 6557983 is 3897556.

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

It is a cyclic number.

It is not a de Polignac number, because 6557983 - 2¹ = 6557981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6557981) 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, 10078 + ... + 10708.

It is an arithmetic number, because the mean of its divisors is an integer number (865840).

Almost surely, 2^6557983 is an apocalyptic number.

6557983 is a deficient number, since it is larger than the sum of its proper divisors (368737).

6557983 is a wasteful number, since it uses less digits than its factorization.

6557983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1197.

The product of its digits is 226800, while the sum is 43.

The square root of 6557983 is about 2560.8559116046. The cubic root of 6557983 is about 187.1788446002.

The spelling of 6557983 in words is "six million, five hundred fifty-seven thousand, nine hundred eighty-three".