2068749761 has 8 divisors (see below), whose sum is σ = 2229298344. Its totient is φ = 1908403200.

The previous prime is 2068749733. The next prime is 2068749763. The reversal of 2068749761 is 1679478602.

It can be written as a sum of positive squares in 4 ways, for example, as 559038736 + 1509711025 = 23644^2 + 38855^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2068749761 - 2¹⁴ = 2068733377 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2068749763) 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, 28886 + ... + 70511.

It is an arithmetic number, because the mean of its divisors is an integer number (278662293).

Almost surely, 2^2068749761 is an apocalyptic number.

It is an amenable number.

2068749761 is a deficient number, since it is larger than the sum of its proper divisors (160548583).

2068749761 is a wasteful number, since it uses less digits than its factorization.

2068749761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101011.

The product of its (nonzero) digits is 1016064, while the sum is 50.

The square root of 2068749761 is about 45483.5108693249. The cubic root of 2068749761 is about 1274.1952652998.

The spelling of 2068749761 in words is "two billion, sixty-eight million, seven hundred forty-nine thousand, seven hundred sixty-one".