2756781705 has 16 divisors (see below), whose sum is σ = 4452076224. Its totient is φ = 1456541760.

The previous prime is 2756781701. The next prime is 2756781707. The reversal of 2756781705 is 5071876572.

It is a happy number.

It is not a de Polignac number, because 2756781705 - 2² = 2756781701 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2756781701) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 857206 + ... + 860415.

It is an arithmetic number, because the mean of its divisors is an integer number (278254764).

Almost surely, 2^2756781705 is an apocalyptic number.

It is an amenable number.

2756781705 is a deficient number, since it is larger than the sum of its proper divisors (1695294519).

2756781705 is a wasteful number, since it uses less digits than its factorization.

2756781705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1717736.

The product of its (nonzero) digits is 823200, while the sum is 48.

The square root of 2756781705 is about 52505.0636129507. The cubic root of 2756781705 is about 1402.1703928969.

The spelling of 2756781705 in words is "two billion, seven hundred fifty-six million, seven hundred eighty-one thousand, seven hundred five".