20783363 has 2 divisors, whose sum is σ = 20783364. Its totient is φ = 20783362.

The previous prime is 20783339. The next prime is 20783383. The reversal of 20783363 is 36338702.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20783363 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20783383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10391681 + 10391682.

It is an arithmetic number, because the mean of its divisors is an integer number (10391682).

Almost surely, 2^20783363 is an apocalyptic number.

20783363 is a deficient number, since it is larger than the sum of its proper divisors (1).

20783363 is an equidigital number, since it uses as much as digits as its factorization.

20783363 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 20783363 is about 4558.8773837426. The cubic root of 20783363 is about 274.9404300722.

The spelling of 20783363 in words is "twenty million, seven hundred eighty-three thousand, three hundred sixty-three".