68817860 has 12 divisors (see below), whose sum is σ = 144517548. Its totient is φ = 27527136.

The previous prime is 68817857. The next prime is 68817869. The reversal of 68817860 is 6871886.

It can be written as a sum of positive squares in 2 ways, for example, as 29855296 + 38962564 = 5464^2 + 6242^2 .

It is not an unprimeable number, because it can be changed into a prime (68817869) 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, 1720427 + ... + 1720466.

It is an arithmetic number, because the mean of its divisors is an integer number (12043129).

Almost surely, 2^68817860 is an apocalyptic number.

It is an amenable number.

68817860 is an abundant number, since it is smaller than the sum of its proper divisors (75699688).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68817860 is a wasteful number, since it uses less digits than its factorization.

68817860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3440902 (or 3440900 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 44.

The square root of 68817860 is about 8295.6530785707. The cubic root of 68817860 is about 409.7953767750.

It can be divided in two parts, 6881 and 7860, that added together give a palindrome (14741).

The spelling of 68817860 in words is "sixty-eight million, eight hundred seventeen thousand, eight hundred sixty".