20799733 has 2 divisors, whose sum is σ = 20799734. Its totient is φ = 20799732.

The previous prime is 20799731. The next prime is 20799739. The reversal of 20799733 is 33799702.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16056049 + 4743684 = 4007^2 + 2178^2 .

It is a cyclic number.

It is not a de Polignac number, because 20799733 - 2¹ = 20799731 is a prime.

Together with 20799731, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20799731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10399866 + 10399867.

It is an arithmetic number, because the mean of its divisors is an integer number (10399867).

Almost surely, 2^20799733 is an apocalyptic number.

It is an amenable number.

20799733 is a deficient number, since it is larger than the sum of its proper divisors (1).

20799733 is an equidigital number, since it uses as much as digits as its factorization.

20799733 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 71442, while the sum is 40.

The square root of 20799733 is about 4560.6724284912. The cubic root of 20799733 is about 275.0125966682.

The spelling of 20799733 in words is "twenty million, seven hundred ninety-nine thousand, seven hundred thirty-three".