68827757 has 4 divisors (see below), whose sum is σ = 68895420. Its totient is φ = 68760096.

The previous prime is 68827739. The next prime is 68827771. The reversal of 68827757 is 75772886.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 45508516 + 23319241 = 6746^2 + 4829^2 .

It is a cyclic number.

It is not a de Polignac number, because 68827757 - 2¹⁰ = 68826733 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 (68827727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32282 + ... + 34347.

It is an arithmetic number, because the mean of its divisors is an integer number (17223855).

Almost surely, 2^68827757 is an apocalyptic number.

It is an amenable number.

68827757 is a deficient number, since it is larger than the sum of its proper divisors (67663).

68827757 is a wasteful number, since it uses less digits than its factorization.

68827757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67662.

The product of its digits is 1317120, while the sum is 50.

The square root of 68827757 is about 8296.2495743559. The cubic root of 68827757 is about 409.8150206603.

The spelling of 68827757 in words is "sixty-eight million, eight hundred twenty-seven thousand, seven hundred fifty-seven".