20683241 has 2 divisors, whose sum is σ = 20683242. Its totient is φ = 20683240.

The previous prime is 20683211. The next prime is 20683249. The reversal of 20683241 is 14238602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20214016 + 469225 = 4496^2 + 685^2 .

It is a cyclic number.

It is not a de Polignac number, because 20683241 - 2²² = 16488937 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20683241.

It is not a weakly prime, because it can be changed into another prime (20683249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10341620 + 10341621.

It is an arithmetic number, because the mean of its divisors is an integer number (10341621).

Almost surely, 2^20683241 is an apocalyptic number.

It is an amenable number.

20683241 is a deficient number, since it is larger than the sum of its proper divisors (1).

20683241 is an equidigital number, since it uses as much as digits as its factorization.

20683241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 20683241 is about 4547.8831339426. The cubic root of 20683241 is about 274.4982188619.

The spelling of 20683241 in words is "twenty million, six hundred eighty-three thousand, two hundred forty-one".