2068742761 has 2 divisors, whose sum is σ = 2068742762. Its totient is φ = 2068742760.

The previous prime is 2068742737. The next prime is 2068742773. The reversal of 2068742761 is 1672478602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2050731225 + 18011536 = 45285^2 + 4244^2 .

It is a cyclic number.

It is not a de Polignac number, because 2068742761 - 2⁵ = 2068742729 is a prime.

It is a super-2 number, since 2×2068742761² = 8559393222379806242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2068742161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1034371380 + 1034371381.

It is an arithmetic number, because the mean of its divisors is an integer number (1034371381).

Almost surely, 2^2068742761 is an apocalyptic number.

It is an amenable number.

2068742761 is a deficient number, since it is larger than the sum of its proper divisors (1).

2068742761 is an equidigital number, since it uses as much as digits as its factorization.

2068742761 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 225792, while the sum is 43.

The square root of 2068742761 is about 45483.4339182960. The cubic root of 2068742761 is about 1274.1938281392.

The spelling of 2068742761 in words is "two billion, sixty-eight million, seven hundred forty-two thousand, seven hundred sixty-one".