20106165 has 8 divisors (see below), whose sum is σ = 32169888. Its totient is φ = 10723280.

The previous prime is 20106157. The next prime is 20106167. The reversal of 20106165 is 56160102.

It is a happy number.

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

It is not a de Polignac number, because 20106165 - 2³ = 20106157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20106167) 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, 670191 + ... + 670220.

It is an arithmetic number, because the mean of its divisors is an integer number (4021236).

Almost surely, 2^20106165 is an apocalyptic number.

It is an amenable number.

20106165 is a deficient number, since it is larger than the sum of its proper divisors (12063723).

20106165 is a wasteful number, since it uses less digits than its factorization.

20106165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1340419.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 20106165 is about 4483.9898527985. The cubic root of 20106165 is about 271.9212078945.

Adding to 20106165 its reverse (56160102), we get a palindrome (76266267).

The spelling of 20106165 in words is "twenty million, one hundred six thousand, one hundred sixty-five".