2021006 has 8 divisors (see below), whose sum is σ = 3264744. Its totient is φ = 932760.

The previous prime is 2021003. The next prime is 2021009. The reversal of 2021006 is 6001202.

It is an interprime number because it is at equal distance from previous prime (2021003) and next prime (2021009).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38840 + ... + 38891.

It is an arithmetic number, because the mean of its divisors is an integer number (408093).

2^2021006 is an apocalyptic number.

2021006 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2021006 is a deficient number, since it is larger than the sum of its proper divisors (1243738).

2021006 is a wasteful number, since it uses less digits than its factorization.

2021006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77746.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 2021006 is about 1421.6209058677. The cubic root of 2021006 is about 126.4316680120.

Adding to 2021006 its reverse (6001202), we get a palindrome (8022208).

The spelling of 2021006 in words is "two million, twenty-one thousand, six".