6653243 has 2 divisors, whose sum is σ = 6653244. Its totient is φ = 6653242.

The previous prime is 6653221. The next prime is 6653299. The reversal of 6653243 is 3423566.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6653243 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a d-powerful number, because it can be written as 6⁴ + 6⁷ + 5⁷ + 3⁵ + 2²¹ + 4¹¹ + 3⁷ .

It is not a weakly prime, because it can be changed into another prime (6658243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3326621 + 3326622.

It is an arithmetic number, because the mean of its divisors is an integer number (3326622).

Almost surely, 2^6653243 is an apocalyptic number.

6653243 is a deficient number, since it is larger than the sum of its proper divisors (1).

6653243 is an equidigital number, since it uses as much as digits as its factorization.

6653243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 29.

The square root of 6653243 is about 2579.3881057336. The cubic root of 6653243 is about 188.0807993566.

The spelling of 6653243 in words is "six million, six hundred fifty-three thousand, two hundred forty-three".