20732693 has 2 divisors, whose sum is σ = 20732694. Its totient is φ = 20732692.

The previous prime is 20732689. The next prime is 20732717. The reversal of 20732693 is 39623702.

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., 13126129 + 7606564 = 3623^2 + 2758^2 .

It is a cyclic number.

It is not a de Polignac number, because 20732693 - 2² = 20732689 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20732603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10366346 + 10366347.

It is an arithmetic number, because the mean of its divisors is an integer number (10366347).

Almost surely, 2^20732693 is an apocalyptic number.

It is an amenable number.

20732693 is a deficient number, since it is larger than the sum of its proper divisors (1).

20732693 is an equidigital number, since it uses as much as digits as its factorization.

20732693 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 32.

The square root of 20732693 is about 4553.3167032395. The cubic root of 20732693 is about 274.7168126138.

The spelling of 20732693 in words is "twenty million, seven hundred thirty-two thousand, six hundred ninety-three".