68968871 has 4 divisors (see below), whose sum is σ = 68989632. Its totient is φ = 68948112.

The previous prime is 68968853. The next prime is 68968891. The reversal of 68968871 is 17886986.

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 68968871 - 2²⁶ = 1860007 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 (68968811) 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, 4151 + ... + 12456.

It is an arithmetic number, because the mean of its divisors is an integer number (17247408).

Almost surely, 2^68968871 is an apocalyptic number.

68968871 is a deficient number, since it is larger than the sum of its proper divisors (20761).

68968871 is a wasteful number, since it uses less digits than its factorization.

68968871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20760.

The product of its digits is 1161216, while the sum is 53.

The square root of 68968871 is about 8304.7499059273. The cubic root of 68968871 is about 410.0949036702.

The spelling of 68968871 in words is "sixty-eight million, nine hundred sixty-eight thousand, eight hundred seventy-one".