2021685573 has 8 divisors (see below), whose sum is σ = 2715257088. Its totient is φ = 1337952224.

The previous prime is 2021685571. The next prime is 2021685581. The reversal of 2021685573 is 3755861202.

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 2021685573 - 2¹ = 2021685571 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021685571) 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 7 ways as a sum of consecutive naturals, for example, 2459061 + ... + 2459882.

It is an arithmetic number, because the mean of its divisors is an integer number (339407136).

Almost surely, 2^2021685573 is an apocalyptic number.

It is an amenable number.

2021685573 is a deficient number, since it is larger than the sum of its proper divisors (693571515).

2021685573 is a wasteful number, since it uses less digits than its factorization.

2021685573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4919083.

The product of its (nonzero) digits is 100800, while the sum is 39.

The square root of 2021685573 is about 44963.1579518165. The cubic root of 2021685573 is about 1264.4583750966.

The spelling of 2021685573 in words is "two billion, twenty-one million, six hundred eighty-five thousand, five hundred seventy-three".