2021605336 has 16 divisors (see below), whose sum is σ = 3796826040. Its totient is φ = 1009118400.

The previous prime is 2021605277. The next prime is 2021605343. The reversal of 2021605336 is 6335061202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205426 + ... + 215041.

Almost surely, 2^2021605336 is an apocalyptic number.

It is an amenable number.

2021605336 is a deficient number, since it is larger than the sum of its proper divisors (1775220704).

2021605336 is a wasteful number, since it uses less digits than its factorization.

2021605336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421074 (or 421070 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 2021605336 is about 44962.2656902430. The cubic root of 2021605336 is about 1264.4416468625.

Adding to 2021605336 its reverse (6335061202), we get a palindrome (8356666538).

The spelling of 2021605336 in words is "two billion, twenty-one million, six hundred five thousand, three hundred thirty-six".