6653641 has 2 divisors, whose sum is σ = 6653642. Its totient is φ = 6653640.

The previous prime is 6653627. The next prime is 6653653. The reversal of 6653641 is 1463566.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4000000 + 2653641 = 2000^2 + 1629^2 .

It is a cyclic number.

It is not a de Polignac number, because 6653641 - 2¹⁷ = 6522569 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6683641) 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 as a sum of consecutive naturals, namely, 3326820 + 3326821.

It is an arithmetic number, because the mean of its divisors is an integer number (3326821).

Almost surely, 2^6653641 is an apocalyptic number.

It is an amenable number.

6653641 is a deficient number, since it is larger than the sum of its proper divisors (1).

6653641 is an equidigital number, since it uses as much as digits as its factorization.

6653641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 31.

The square root of 6653641 is about 2579.4652546604. The cubic root of 6653641 is about 188.0845496413.

The spelling of 6653641 in words is "six million, six hundred fifty-three thousand, six hundred forty-one".