2680857730 has 16 divisors (see below), whose sum is σ = 4991942520. Its totient is φ = 1035365632.

The previous prime is 2680857719. The next prime is 2680857749. The reversal of 2680857730 is 377580862.

It is a Cunningham number, because it is equal to 51777²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 1405725049 + 1275132681 = 37493^2 + 35709^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4621879 + ... + 4622458.

Almost surely, 2^2680857730 is an apocalyptic number.

2680857730 is a deficient number, since it is larger than the sum of its proper divisors (2311084790).

2680857730 is a wasteful number, since it uses less digits than its factorization.

2680857730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9244373.

The product of its (nonzero) digits is 564480, while the sum is 46.

The square root of 2680857730 is about 51777.0000096568. Note that the first 5 decimals coincide. The cubic root of 2680857730 is about 1389.1780814505.

The spelling of 2680857730 in words is "two billion, six hundred eighty million, eight hundred fifty-seven thousand, seven hundred thirty".