20283617 has 2 divisors, whose sum is σ = 20283618. Its totient is φ = 20283616.

The previous prime is 20283607. The next prime is 20283667. The reversal of 20283617 is 71638202.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20151121 + 132496 = 4489^2 + 364^2 .

It is a cyclic number.

It is not a de Polignac number, because 20283617 - 2¹⁰ = 20282593 is a prime.

It is a super-2 number, since 2×20283617² = 822850237205378, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20283617.

It is not a weakly prime, because it can be changed into another prime (20283607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10141808 + 10141809.

It is an arithmetic number, because the mean of its divisors is an integer number (10141809).

Almost surely, 2^20283617 is an apocalyptic number.

It is an amenable number.

20283617 is a deficient number, since it is larger than the sum of its proper divisors (1).

20283617 is an equidigital number, since it uses as much as digits as its factorization.

20283617 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 20283617 is about 4503.7336732982. The cubic root of 20283617 is about 272.7188355201.

The spelling of 20283617 in words is "twenty million, two hundred eighty-three thousand, six hundred seventeen".