2840000621 has 4 divisors (see below), whose sum is σ = 2845580700. Its totient is φ = 2834420544.

The previous prime is 2840000617. The next prime is 2840000627. The reversal of 2840000621 is 1260000482.

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 2142301225 + 697699396 = 46285^2 + 26414^2 .

It is a cyclic number.

It is not a de Polignac number, because 2840000621 - 2² = 2840000617 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2840000627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2789276 + ... + 2790293.

It is an arithmetic number, because the mean of its divisors is an integer number (711395175).

Almost surely, 2^2840000621 is an apocalyptic number.

It is an amenable number.

2840000621 is a deficient number, since it is larger than the sum of its proper divisors (5580079).

2840000621 is an equidigital number, since it uses as much as digits as its factorization.

2840000621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5580078.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 2840000621 is about 53291.6562043253. The cubic root of 2840000621 is about 1416.1398534356.

The spelling of 2840000621 in words is "two billion, eight hundred forty million, six hundred twenty-one", and thus it is an aban number.