20375633 has 2 divisors, whose sum is σ = 20375634. Its totient is φ = 20375632.

The previous prime is 20375627. The next prime is 20375699. The reversal of 20375633 is 33657302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20367169 + 8464 = 4513^2 + 92^2 .

It is a cyclic number.

It is not a de Polignac number, because 20375633 - 2⁶ = 20375569 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20375596 and 20375605.

It is not a weakly prime, because it can be changed into another prime (20375933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10187816 + 10187817.

It is an arithmetic number, because the mean of its divisors is an integer number (10187817).

Almost surely, 2^20375633 is an apocalyptic number.

It is an amenable number.

20375633 is a deficient number, since it is larger than the sum of its proper divisors (1).

20375633 is an equidigital number, since it uses as much as digits as its factorization.

20375633 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11340, while the sum is 29.

The square root of 20375633 is about 4513.9376380274. The cubic root of 20375633 is about 273.1306069991.

The spelling of 20375633 in words is "twenty million, three hundred seventy-five thousand, six hundred thirty-three".