2020993 has 4 divisors (see below), whose sum is σ = 2176468. Its totient is φ = 1865520.

The previous prime is 2020979. The next prime is 2020999. The reversal of 2020993 is 3990202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1327104 + 693889 = 1152^2 + 833^2 .

It is a cyclic number.

It is not a de Polignac number, because 2020993 - 2⁵ = 2020961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2020999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77718 + ... + 77743.

It is an arithmetic number, because the mean of its divisors is an integer number (544117).

2^2020993 is an apocalyptic number.

It is an amenable number.

2020993 is a deficient number, since it is larger than the sum of its proper divisors (155475).

2020993 is a wasteful number, since it uses less digits than its factorization.

2020993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155474.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 2020993 is about 1421.6163336147. The cubic root of 2020993 is about 126.4313969234.

It can be divided in two parts, 20209 and 93, that added together give a palindrome (20302).

The spelling of 2020993 in words is "two million, twenty thousand, nine hundred ninety-three".