2020981 has 8 divisors (see below), whose sum is σ = 2106720. Its totient is φ = 1936368.

The previous prime is 2020979. The next prime is 2020999. The reversal of 2020981 is 1890202.

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

It is a cyclic number.

It is not a de Polignac number, because 2020981 - 2¹ = 2020979 is a prime.

It is a super-2 number, since 2×2020981² = 8168728404722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6430 + ... + 6736.

It is an arithmetic number, because the mean of its divisors is an integer number (263340).

2^2020981 is an apocalyptic number.

It is an amenable number.

2020981 is a deficient number, since it is larger than the sum of its proper divisors (85739).

2020981 is a wasteful number, since it uses less digits than its factorization.

2020981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 2020981 is about 1421.6121130604. The cubic root of 2020981 is about 126.4311466867.

The spelling of 2020981 in words is "two million, twenty thousand, nine hundred eighty-one".