20173069 has 4 divisors (see below), whose sum is σ = 23054944. Its totient is φ = 17291196.

The previous prime is 20173051. The next prime is 20173081. The reversal of 20173069 is 96037102.

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 20173069 - 2⁷ = 20172941 is a prime.

It is a super-2 number, since 2×20173069² = 813905425757522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20173469) 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, 1440927 + ... + 1440940.

It is an arithmetic number, because the mean of its divisors is an integer number (5763736).

Almost surely, 2^20173069 is an apocalyptic number.

It is an amenable number.

20173069 is a deficient number, since it is larger than the sum of its proper divisors (2881875).

20173069 is an equidigital number, since it uses as much as digits as its factorization.

20173069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2881874.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 20173069 is about 4491.4439771637. The cubic root of 20173069 is about 272.2224832305. Note that the first 3 decimals are identical.

The spelling of 20173069 in words is "twenty million, one hundred seventy-three thousand, sixty-nine".