68958871 has 4 divisors (see below), whose sum is σ = 69016752. Its totient is φ = 68900992.

The previous prime is 68958859. The next prime is 68958881. The reversal of 68958871 is 17885986.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17885986 = 2 ⋅8942993.

It is a cyclic number.

It is not a de Polignac number, because 68958871 - 2⁹ = 68958359 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 (68958881) 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, 27115 + ... + 29548.

It is an arithmetic number, because the mean of its divisors is an integer number (17254188).

Almost surely, 2^68958871 is an apocalyptic number.

68958871 is a deficient number, since it is larger than the sum of its proper divisors (57881).

68958871 is a wasteful number, since it uses less digits than its factorization.

68958871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57880.

The product of its digits is 967680, while the sum is 52.

The square root of 68958871 is about 8304.1478190119. The cubic root of 68958871 is about 410.0750824224.

The spelling of 68958871 in words is "sixty-eight million, nine hundred fifty-eight thousand, eight hundred seventy-one".