20675573 has 2 divisors, whose sum is σ = 20675574. Its totient is φ = 20675572.

The previous prime is 20675569. The next prime is 20675593. The reversal of 20675573 is 37557602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20584369 + 91204 = 4537^2 + 302^2 .

It is a cyclic number.

It is not a de Polignac number, because 20675573 - 2² = 20675569 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20675513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10337786 + 10337787.

It is an arithmetic number, because the mean of its divisors is an integer number (10337787).

Almost surely, 2^20675573 is an apocalyptic number.

It is an amenable number.

20675573 is a deficient number, since it is larger than the sum of its proper divisors (1).

20675573 is an equidigital number, since it uses as much as digits as its factorization.

20675573 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 44100, while the sum is 35.

The square root of 20675573 is about 4547.0400262149. The cubic root of 20675573 is about 274.4642926426.

The spelling of 20675573 in words is "twenty million, six hundred seventy-five thousand, five hundred seventy-three".