20693173 has 4 divisors (see below), whose sum is σ = 20708128. Its totient is φ = 20678220.

The previous prime is 20693171. The next prime is 20693203. The reversal of 20693173 is 37139602.

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 20693173 - 2¹ = 20693171 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20693171) 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 in 3 ways as a sum of consecutive naturals, for example, 5163 + ... + 8248.

It is an arithmetic number, because the mean of its divisors is an integer number (5177032).

Almost surely, 2^20693173 is an apocalyptic number.

It is an amenable number.

20693173 is a deficient number, since it is larger than the sum of its proper divisors (14955).

20693173 is a wasteful number, since it uses less digits than its factorization.

20693173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14954.

The product of its (nonzero) digits is 6804, while the sum is 31.

The square root of 20693173 is about 4548.9749394781. The cubic root of 20693173 is about 274.5421494373.

The spelling of 20693173 in words is "twenty million, six hundred ninety-three thousand, one hundred seventy-three".