20599741 has 2 divisors, whose sum is σ = 20599742. Its totient is φ = 20599740.

The previous prime is 20599729. The next prime is 20599769. The reversal of 20599741 is 14799502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15960025 + 4639716 = 3995^2 + 2154^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20599741 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20599741.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20599441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10299870 + 10299871.

It is an arithmetic number, because the mean of its divisors is an integer number (10299871).

Almost surely, 2^20599741 is an apocalyptic number.

It is an amenable number.

20599741 is a deficient number, since it is larger than the sum of its proper divisors (1).

20599741 is an equidigital number, since it uses as much as digits as its factorization.

20599741 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 20599741 is about 4538.6937548154. The cubic root of 20599741 is about 274.1283297847.

The spelling of 20599741 in words is "twenty million, five hundred ninety-nine thousand, seven hundred forty-one".