220204197 has 16 divisors (see below), whose sum is σ = 327417280. Its totient is φ = 146267856.

The previous prime is 220204183. The next prime is 220204199. The reversal of 220204197 is 791402022.

220204197 is a `hidden beast` number, since 220 + 20 + 419 + 7 = 666.

It is not a de Polignac number, because 220204197 - 2⁷ = 220204069 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 220204197.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220204199) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7243 + ... + 22200.

It is an arithmetic number, because the mean of its divisors is an integer number (20463580).

Almost surely, 2^220204197 is an apocalyptic number.

220204197 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

220204197 is a deficient number, since it is larger than the sum of its proper divisors (107213083).

220204197 is a wasteful number, since it uses less digits than its factorization.

220204197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29729 (or 29723 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 220204197 is about 14839.2788571413. The cubic root of 220204197 is about 603.8677884456.

The spelling of 220204197 in words is "two hundred twenty million, two hundred four thousand, one hundred ninety-seven".