20633933 has 2 divisors, whose sum is σ = 20633934. Its totient is φ = 20633932.

The previous prime is 20633911. The next prime is 20633953. The reversal of 20633933 is 33933602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18003049 + 2630884 = 4243^2 + 1622^2 .

It is a cyclic number.

It is not a de Polignac number, because 20633933 - 2²⁴ = 3856717 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20633896 and 20633905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20633953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10316966 + 10316967.

It is an arithmetic number, because the mean of its divisors is an integer number (10316967).

Almost surely, 2^20633933 is an apocalyptic number.

It is an amenable number.

20633933 is a deficient number, since it is larger than the sum of its proper divisors (1).

20633933 is an equidigital number, since it uses as much as digits as its factorization.

20633933 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8748, while the sum is 29.

The square root of 20633933 is about 4542.4589156095. The cubic root of 20633933 is about 274.2799144540.

The spelling of 20633933 in words is "twenty million, six hundred thirty-three thousand, nine hundred thirty-three".