20669106 has 8 divisors (see below), whose sum is σ = 41338224. Its totient is φ = 6889700.

The previous prime is 20669101. The next prime is 20669107. The reversal of 20669106 is 60196602.

It is a sphenic number, since it is the product of 3 distinct primes.

20669106 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (20669101) 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, 1722420 + ... + 1722431.

It is an arithmetic number, because the mean of its divisors is an integer number (5167278).

Almost surely, 2^20669106 is an apocalyptic number.

20669106 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20669106 is a wasteful number, since it uses less digits than its factorization.

20669106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3444856.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 20669106 is about 4546.3288486426. The cubic root of 20669106 is about 274.4356735942.

The spelling of 20669106 in words is "twenty million, six hundred sixty-nine thousand, one hundred six".