68818757 has 8 divisors (see below), whose sum is σ = 78710016. Its totient is φ = 58942512.

The previous prime is 68818747. The next prime is 68818781. The reversal of 68818757 is 75781886.

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 68818757 - 2¹⁰ = 68817733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68818747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8948 + ... + 14754.

It is an arithmetic number, because the mean of its divisors is an integer number (9838752).

Almost surely, 2^68818757 is an apocalyptic number.

It is an amenable number.

68818757 is a deficient number, since it is larger than the sum of its proper divisors (9891259).

68818757 is a wasteful number, since it uses less digits than its factorization.

68818757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7507.

The product of its digits is 752640, while the sum is 50.

The square root of 68818757 is about 8295.7071428541. The cubic root of 68818757 is about 409.7971572472.

The spelling of 68818757 in words is "sixty-eight million, eight hundred eighteen thousand, seven hundred fifty-seven".