68875757 has 4 divisors (see below), whose sum is σ = 69100416. Its totient is φ = 68651100.

The previous prime is 68875747. The next prime is 68875787. The reversal of 68875757 is 75757886.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 68875757 - 2⁶ = 68875693 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68875699 and 68875708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68875747) 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, 111869 + ... + 112482.

It is an arithmetic number, because the mean of its divisors is an integer number (17275104).

Almost surely, 2^68875757 is an apocalyptic number.

It is an amenable number.

68875757 is a deficient number, since it is larger than the sum of its proper divisors (224659).

68875757 is a wasteful number, since it uses less digits than its factorization.

68875757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224658.

The product of its digits is 3292800, while the sum is 53.

The square root of 68875757 is about 8299.1419435987. The cubic root of 68875757 is about 409.9102659062.

The spelling of 68875757 in words is "sixty-eight million, eight hundred seventy-five thousand, seven hundred fifty-seven".