68268887 has 4 divisors (see below), whose sum is σ = 68416800. Its totient is φ = 68120976.

The previous prime is 68268869. The next prime is 68268953. The reversal of 68268887 is 78886286.

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

It is a cyclic number.

It is not a de Polignac number, because 68268887 - 2¹⁰ = 68267863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68268847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73262 + ... + 74187.

It is an arithmetic number, because the mean of its divisors is an integer number (17104200).

Almost surely, 2^68268887 is an apocalyptic number.

68268887 is a deficient number, since it is larger than the sum of its proper divisors (147913).

68268887 is a wasteful number, since it uses less digits than its factorization.

68268887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147912.

The product of its digits is 2064384, while the sum is 53.

The square root of 68268887 is about 8262.4988350983. The cubic root of 68268887 is about 408.7027947868.

The spelling of 68268887 in words is "sixty-eight million, two hundred sixty-eight thousand, eight hundred eighty-seven".