2700651821 has 4 divisors (see below), whose sum is σ = 3086459232. Its totient is φ = 2314844412.

The previous prime is 2700651809. The next prime is 2700651823. The reversal of 2700651821 is 1281560072.

2700651821 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2700651821 - 2⁶ = 2700651757 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 (2700651823) 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, 192903695 + ... + 192903708.

It is an arithmetic number, because the mean of its divisors is an integer number (771614808).

Almost surely, 2^2700651821 is an apocalyptic number.

It is an amenable number.

2700651821 is a deficient number, since it is larger than the sum of its proper divisors (385807411).

2700651821 is an equidigital number, since it uses as much as digits as its factorization.

2700651821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385807410.

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 2700651821 is about 51967.7959990608. The cubic root of 2700651821 is about 1392.5886960706.

The spelling of 2700651821 in words is "two billion, seven hundred million, six hundred fifty-one thousand, eight hundred twenty-one".