2680431785 has 8 divisors (see below), whose sum is σ = 3294970056. Its totient is φ = 2092044160.

The previous prime is 2680431781. The next prime is 2680431791. The reversal of 2680431785 is 5871340862.

It can be written as a sum of positive squares in 4 ways, for example, as 107101801 + 2573329984 = 10349^2 + 50728^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2680431785 - 2² = 2680431781 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2680431781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6537434 + ... + 6537843.

It is an arithmetic number, because the mean of its divisors is an integer number (411871257).

Almost surely, 2^2680431785 is an apocalyptic number.

It is an amenable number.

2680431785 is a deficient number, since it is larger than the sum of its proper divisors (614538271).

2680431785 is a wasteful number, since it uses less digits than its factorization.

2680431785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13075323.

The product of its (nonzero) digits is 322560, while the sum is 44.

The square root of 2680431785 is about 51772.8865816848. The cubic root of 2680431785 is about 1389.1045048992.

The spelling of 2680431785 in words is "two billion, six hundred eighty million, four hundred thirty-one thousand, seven hundred eighty-five".