20164197 has 8 divisors (see below), whose sum is σ = 27226240. Its totient is φ = 13272480.

The previous prime is 20164163. The next prime is 20164219. The reversal of 20164197 is 79146102.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-20164197 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 (20164117) 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, 42304 + ... + 42777.

It is an arithmetic number, because the mean of its divisors is an integer number (3403280).

Almost surely, 2^20164197 is an apocalyptic number.

It is an amenable number.

20164197 is a deficient number, since it is larger than the sum of its proper divisors (7062043).

20164197 is an equidigital number, since it uses as much as digits as its factorization.

20164197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85163.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 20164197 is about 4490.4562129031. The cubic root of 20164197 is about 272.1825700833.

The spelling of 20164197 in words is "twenty million, one hundred sixty-four thousand, one hundred ninety-seven".