2000306621 has 4 divisors (see below), whose sum is σ = 2000657244. Its totient is φ = 1999956000.

The previous prime is 2000306603. The next prime is 2000306629. The reversal of 2000306621 is 1266030002.

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 986839396 + 1013467225 = 31414^2 + 31835^2 .

It is a cyclic number.

It is not a de Polignac number, because 2000306621 - 2¹⁸ = 2000044477 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2000306593 and 2000306602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2000306629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166610 + ... + 178211.

It is an arithmetic number, because the mean of its divisors is an integer number (500164311).

Almost surely, 2^2000306621 is an apocalyptic number.

It is an amenable number.

2000306621 is a deficient number, since it is larger than the sum of its proper divisors (350623).

2000306621 is an equidigital number, since it uses as much as digits as its factorization.

2000306621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350622.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 2000306621 is about 44724.7875456105. The cubic root of 2000306621 is about 1259.9854329802.

Adding to 2000306621 its reverse (1266030002), we get a palindrome (3266336623).

The spelling of 2000306621 in words is "two billion, three hundred six thousand, six hundred twenty-one".