6653983 has 4 divisors (see below), whose sum is σ = 7604560. Its totient is φ = 5703408.

The previous prime is 6653957. The next prime is 6653989. The reversal of 6653983 is 3893566.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6653983 - 2¹⁷ = 6522911 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 (6653989) 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 3 ways as a sum of consecutive naturals, for example, 475278 + ... + 475291.

It is an arithmetic number, because the mean of its divisors is an integer number (1901140).

Almost surely, 2^6653983 is an apocalyptic number.

6653983 is a deficient number, since it is larger than the sum of its proper divisors (950577).

6653983 is an equidigital number, since it uses as much as digits as its factorization.

6653983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 950576.

The product of its digits is 116640, while the sum is 40.

The square root of 6653983 is about 2579.5315466185. The cubic root of 6653983 is about 188.0877721282.

The spelling of 6653983 in words is "six million, six hundred fifty-three thousand, nine hundred eighty-three".