2056705567 has 6 divisors (see below), whose sum is σ = 2392494288. Its totient is φ = 1762890444.

The previous prime is 2056705501. The next prime is 2056705583. The reversal of 2056705567 is 7655076502.

It is a de Polignac number, because none of the positive numbers 2^k-2056705567 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2056705267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20986743 + ... + 20986840.

It is an arithmetic number, because the mean of its divisors is an integer number (398749048).

Almost surely, 2^2056705567 is an apocalyptic number.

2056705567 is a deficient number, since it is larger than the sum of its proper divisors (335788721).

2056705567 is an equidigital number, since it uses as much as digits as its factorization.

2056705567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41973597 (or 41973590 counting only the distinct ones).

The product of its (nonzero) digits is 441000, while the sum is 43.

The square root of 2056705567 is about 45350.9158341924. The cubic root of 2056705567 is about 1271.7176764134.

The spelling of 2056705567 in words is "two billion, fifty-six million, seven hundred five thousand, five hundred sixty-seven".