68382757 has 4 divisors (see below), whose sum is σ = 69059916. Its totient is φ = 67705600.

The previous prime is 68382731. The next prime is 68382781. The reversal of 68382757 is 75728386.

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 46908801 + 21473956 = 6849^2 + 4634^2 .

It is a cyclic number.

It is not a de Polignac number, because 68382757 - 2¹¹ = 68380709 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 (68382707) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 338428 + ... + 338629.

It is an arithmetic number, because the mean of its divisors is an integer number (17264979).

Almost surely, 2^68382757 is an apocalyptic number.

It is an amenable number.

68382757 is a deficient number, since it is larger than the sum of its proper divisors (677159).

68382757 is a wasteful number, since it uses less digits than its factorization.

68382757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677158.

The product of its digits is 564480, while the sum is 46.

The square root of 68382757 is about 8269.3867366329. The cubic root of 68382757 is about 408.9299023225.

The spelling of 68382757 in words is "sixty-eight million, three hundred eighty-two thousand, seven hundred fifty-seven".