2076781785 has 64 divisors (see below), whose sum is σ = 3714681600. Its totient is φ = 983743488.

The previous prime is 2076781771. The next prime is 2076781789. The reversal of 2076781785 is 5871876702.

It is not a de Polignac number, because 2076781785 - 2¹¹ = 2076779737 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2076781789) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2504751 + ... + 2505579.

It is an arithmetic number, because the mean of its divisors is an integer number (58041900).

Almost surely, 2^2076781785 is an apocalyptic number.

It is an amenable number.

2076781785 is a deficient number, since it is larger than the sum of its proper divisors (1637899815).

2076781785 is a wasteful number, since it uses less digits than its factorization.

2076781785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1322.

The product of its (nonzero) digits is 1317120, while the sum is 51.

The square root of 2076781785 is about 45571.7213302285. The cubic root of 2076781785 is about 1275.8421779252.

The spelling of 2076781785 in words is "two billion, seventy-six million, seven hundred eighty-one thousand, seven hundred eighty-five".