20675223 has 8 divisors (see below), whose sum is σ = 30630000. Its totient is φ = 13783464.

The previous prime is 20675203. The next prime is 20675227. The reversal of 20675223 is 32257602.

It is not a de Polignac number, because 20675223 - 2⁵ = 20675191 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 765749 = 20675223 / (2 + 0 + 6 + 7 + 5 + 2 + 2 + 3).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20675227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 382848 + ... + 382901.

It is an arithmetic number, because the mean of its divisors is an integer number (3828750).

Almost surely, 2^20675223 is an apocalyptic number.

20675223 is a deficient number, since it is larger than the sum of its proper divisors (9954777).

20675223 is an equidigital number, since it uses as much as digits as its factorization.

20675223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765758 (or 765752 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 20675223 is about 4547.0015394763. The cubic root of 20675223 is about 274.4627439060.

The spelling of 20675223 in words is "twenty million, six hundred seventy-five thousand, two hundred twenty-three".