20593649 has 2 divisors, whose sum is σ = 20593650. Its totient is φ = 20593648.

The previous prime is 20593633. The next prime is 20593673. The reversal of 20593649 is 94639502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10608049 + 9985600 = 3257^2 + 3160^2 .

It is a cyclic number.

It is not a de Polignac number, because 20593649 - 2⁴ = 20593633 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20593619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10296824 + 10296825.

It is an arithmetic number, because the mean of its divisors is an integer number (10296825).

Almost surely, 2^20593649 is an apocalyptic number.

It is an amenable number.

20593649 is a deficient number, since it is larger than the sum of its proper divisors (1).

20593649 is an equidigital number, since it uses as much as digits as its factorization.

20593649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58320, while the sum is 38.

The square root of 20593649 is about 4538.0225869865. The cubic root of 20593649 is about 274.1013042923.

The spelling of 20593649 in words is "twenty million, five hundred ninety-three thousand, six hundred forty-nine".