68888741 has 4 divisors (see below), whose sum is σ = 68951532. Its totient is φ = 68825952.

The previous prime is 68888719. The next prime is 68888747. The reversal of 68888741 is 14788886.

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 38130625 + 30758116 = 6175^2 + 5546^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68888741 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68888741.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68888747) 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 3 ways as a sum of consecutive naturals, for example, 29720 + ... + 31953.

It is an arithmetic number, because the mean of its divisors is an integer number (17237883).

Almost surely, 2^68888741 is an apocalyptic number.

It is an amenable number.

68888741 is a deficient number, since it is larger than the sum of its proper divisors (62791).

68888741 is a wasteful number, since it uses less digits than its factorization.

68888741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62790.

The product of its digits is 688128, while the sum is 50.

The square root of 68888741 is about 8299.9241562800. The cubic root of 68888741 is about 409.9360221409.

The spelling of 68888741 in words is "sixty-eight million, eight hundred eighty-eight thousand, seven hundred forty-one".