68868658 has 4 divisors (see below), whose sum is σ = 103302990. Its totient is φ = 34434328.

The previous prime is 68868637. The next prime is 68868659. The reversal of 68868658 is 85686886.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 40106889 + 28761769 = 6333^2 + 5363^2 .

It is a junction number, because it is equal to n+sod(n) for n = 68868599 and 68868608.

It is not an unprimeable number, because it can be changed into a prime (68868659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17217163 + ... + 17217166.

Almost surely, 2^68868658 is an apocalyptic number.

68868658 is a deficient number, since it is larger than the sum of its proper divisors (34434332).

68868658 is a wasteful number, since it uses less digits than its factorization.

68868658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34434331.

The product of its digits is 4423680, while the sum is 55.

The square root of 68868658 is about 8298.7142377600. The cubic root of 68868658 is about 409.8961823201.

The spelling of 68868658 in words is "sixty-eight million, eight hundred sixty-eight thousand, six hundred fifty-eight".