20484617 has 2 divisors, whose sum is σ = 20484618. Its totient is φ = 20484616.

The previous prime is 20484599. The next prime is 20484631. The reversal of 20484617 is 71648402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19971961 + 512656 = 4469^2 + 716^2 .

It is a cyclic number.

It is not a de Polignac number, because 20484617 - 2¹⁸ = 20222473 is a prime.

It is not a weakly prime, because it can be changed into another prime (20484017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10242308 + 10242309.

It is an arithmetic number, because the mean of its divisors is an integer number (10242309).

Almost surely, 2^20484617 is an apocalyptic number.

It is an amenable number.

20484617 is a deficient number, since it is larger than the sum of its proper divisors (1).

20484617 is an equidigital number, since it uses as much as digits as its factorization.

20484617 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 20484617 is about 4525.9934820987. The cubic root of 20484617 is about 273.6167097124.

The spelling of 20484617 in words is "twenty million, four hundred eighty-four thousand, six hundred seventeen".