6656983 has 4 divisors (see below), whose sum is σ = 6667920. Its totient is φ = 6646048.

The previous prime is 6656981. The next prime is 6656987. The reversal of 6656983 is 3896566.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3896566 = 2 ⋅1948283.

It is a cyclic number.

It is not a de Polignac number, because 6656983 - 2¹ = 6656981 is a prime.

It is a Duffinian number.

6656983 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6656981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4498 + ... + 5791.

It is an arithmetic number, because the mean of its divisors is an integer number (1666980).

Almost surely, 2^6656983 is an apocalyptic number.

6656983 is a deficient number, since it is larger than the sum of its proper divisors (10937).

6656983 is a wasteful number, since it uses less digits than its factorization.

6656983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10936.

The product of its digits is 233280, while the sum is 43.

The square root of 6656983 is about 2580.1129820223. The cubic root of 6656983 is about 188.1160348262.

The spelling of 6656983 in words is "six million, six hundred fifty-six thousand, nine hundred eighty-three".