201006 has 24 divisors (see below), whose sum is σ = 469560. Its totient is φ = 61776.

The previous prime is 200989. The next prime is 201007. The reversal of 201006 is 600102.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201007) by changing a digit.

201006 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 196 + ... + 663.

It is an arithmetic number, because the mean of its divisors is an integer number (19565).

2²⁰¹⁰⁰⁶ is an apocalyptic number.

201006 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

201006 is an abundant number, since it is smaller than the sum of its proper divisors (268554).

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

201006 is a wasteful number, since it uses less digits than its factorization.

201006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 880 (or 877 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 201006 is about 448.3369268753. The cubic root of 201006 is about 58.5782428830.

Adding to 201006 its reverse (600102), we get a palindrome (801108).

The spelling of 201006 in words is "two hundred one thousand, six".