20206673 has 4 divisors (see below), whose sum is σ = 21085248. Its totient is φ = 19328100.

The previous prime is 20206661. The next prime is 20206687. The reversal of 20206673 is 37660202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20206673 - 2⁴ = 20206657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20200673) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 439253 + ... + 439298.

It is an arithmetic number, because the mean of its divisors is an integer number (5271312).

Almost surely, 2^20206673 is an apocalyptic number.

20206673 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

20206673 is a deficient number, since it is larger than the sum of its proper divisors (878575).

20206673 is an equidigital number, since it uses as much as digits as its factorization.

20206673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 878574.

The product of its (nonzero) digits is 3024, while the sum is 26.

The square root of 20206673 is about 4495.1833110564. The cubic root of 20206673 is about 272.3735541065.

Adding to 20206673 its reverse (37660202), we get a palindrome (57866875).

The spelling of 20206673 in words is "twenty million, two hundred six thousand, six hundred seventy-three".