200997 has 12 divisors (see below), whose sum is σ = 303264. Its totient is φ = 128040.

The previous prime is 200989. The next prime is 201007. The reversal of 200997 is 799002.

It is not a de Polignac number, because 200997 - 2³ = 200989 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 200997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 279 + ... + 692.

It is an arithmetic number, because the mean of its divisors is an integer number (25272).

2²⁰⁰⁹⁹⁷ is an apocalyptic number.

It is an amenable number.

200997 is a deficient number, since it is larger than the sum of its proper divisors (102267).

200997 is a wasteful number, since it uses less digits than its factorization.

200997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000 (or 997 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 27.

The square root of 200997 is about 448.3268896687. The cubic root of 200997 is about 58.5773685939.

Adding to 200997 its reverse (799002), we get a palindrome (999999).

The spelling of 200997 in words is "two hundred thousand, nine hundred ninety-seven".