2680955865 has 36 divisors (see below), whose sum is σ = 5405686884. Its totient is φ = 1225578816.

The previous prime is 2680955839. The next prime is 2680955887. The reversal of 2680955865 is 5685590862.

2680955865 is a `hidden beast` number, since 2 + 6 + 80 + 9 + 558 + 6 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 305270784 + 2375685081 = 17472^2 + 48741^2 .

It is not a de Polignac number, because 2680955865 - 2⁵ = 2680955833 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 605722 + ... + 610131.

It is an arithmetic number, because the mean of its divisors is an integer number (150157969).

Almost surely, 2^2680955865 is an apocalyptic number.

It is an amenable number.

2680955865 is an abundant number, since it is smaller than the sum of its proper divisors (2724731019).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2680955865 is a wasteful number, since it uses less digits than its factorization.

2680955865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1215878 (or 1215868 counting only the distinct ones).

The product of its (nonzero) digits is 5184000, while the sum is 54.

The square root of 2680955865 is about 51777.9476707990. The cubic root of 2680955865 is about 1389.1950319120.

The spelling of 2680955865 in words is "two billion, six hundred eighty million, nine hundred fifty-five thousand, eight hundred sixty-five".